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Worksheets

Soal Pompa

Total questions: 243

Worksheet time: 12hrs 28mins

Name
Class
Date
1.

What are the two main categories of pumps based on their working principle?

a)

a) Positive Displacement and Submersible

b)

b) Centrifugal and Diaphragm

c)

c) Reciprocating and Axial Flow

d)

d) Gear and Vane

2.

Which of the following is a primary component of a centrifugal pump?

a)

a) Piston

b)

b) Impeller

c)

c) Diaphragm

d)

d) Plunger

3.

What does NPSH stand for, and why is it important in pump operation?

a)

a) Net Pump System Head, measures pump efficiency

b)

b) Necessary Pump Speed Head, determines pump speed

c)

c) Net Positive Suction Head, prevents cavitation

d)

d) Non-Pressure System Head, measures pump pressure

4.

What causes cavitation in pumps?

a)

a) Excessive vibration during pump operation

b)

b) Formation of bubbles in the liquid due to low pressure

c)

c) Increased pump efficiency

d)

d) Reduced pump speed

5.

What is the difference between NPSHa (Available) and NPSHr (Required)?

a)

a) None above are correct

b)

b) NPSHa is the available head at the pump suction, and NPSHr is the required head to prevent cavitation

c)

c) NPSHa is the pump's efficiency, and NPSHr is the pump's power

d)

d) NPSHa is the pump's discharge pressure, and NPSHr is the pump's flow rate

6.

What is the main role of an impeller in a centrifugal pump?

a)

a) To control the pump's flow rate

b)

b) To convert mechanical energy into kinetic energy

c)

c) To regulate the pump's suction head

d)

d) To measure the pump's efficiency

7.

Why is it important for Ina, Dewi, and Titi to ensure the proper alignment of a centrifugal pump?

a)

a) To prevent excessive vibration during pump operation

b)

b) To increase the pump's flow rate

c)

c) To reduce the pump's discharge pressure

d)

d) To measure the pump's efficiency

8.

What is the purpose of a volute casing in a centrifugal pump?

a)

a) To increase the pump's discharge pressure

b)

b) To convert kinetic energy into pressure energy

c)

c) To regulate the pump's flow rate

d)

d) To measure the pump's efficiency

9.

Why is it important for Joko, Nur, and Surya to prime a centrifugal pump before operation?

a)

a) To prevent excessive vibration during pump operation

b)

b) To increase the pump's flow rate

c)

c) To remove air from the pump and create suction

d)

d) To measure the pump's efficiency

10.

What is the purpose of a wear ring in a centrifugal pump?

a)

a) To prevent excessive vibration during pump operation

b)

b) To increase the pump's flow rate

c)

c) To maintain hydraulic efficiency and reduce internal recirculation

d)

d) To measure the pump's efficiency

11.

What is the importance of specific speed in centrifugal pump selection?

a)

a) It determines the pump's efficiency

b)

b) It indicates the pump's flow rate

c)

c) It helps in selecting the right type and size of pump for a particular application

d)

d) It measures the pump's discharge pressure

12.

What is the purpose of an intercooler in a compressor system?

a)

a) To increase the temperature of the compressed air

b)

b) To decrease the pressure of the compressed air

c)

c) To remove moisture and cool the compressed air

d)

d) To regulate the flow rate of the compressed air

13.

Why is it important to maintain proper lubrication in a compressor?

a)

a) To increase the temperature of the compressed air

b)

b) To decrease the pressure of the compressed air

c)

c) To reduce friction and wear between moving parts

d)

d) To regulate the flow rate of the compressed air

14.

What is the function of a diffuser in a centrifugal compressor?

a)

a) To increase the temperature of the compressed air

b)

b) To decrease the pressure of the compressed air

c)

c) To convert kinetic energy into pressure energy

d)

d) To regulate the flow rate of the compressed air

15.

When the fluid is forced away from the center, or the eye of the impeller, a ____ is created thus resulting to flowing of more liquid.

a)

centrifugal force

b)

positive displacement

c)

vacuum

d)

negative displacement

16.

Type of a centrifugal pump that borrows characteristics from both radial flow and axial flow pumps.

a)

Radial Flow Pump

b)

Mixed Flow Pump

c)

Axial Flow Pump

17.

It is a type of pump casing design that has an offset impeller creating a curved funnel with an increasing cross-sectional area towards the pump outlet which causes the fluid pressure to increase towards the outlet.

a)

vortex

b)

volute

c)

diffuser

d)

rotary

18.

It is used for a wide variety of industrial applications thanks to their increased efficiency and ability to pump fluids at higher pressures.

a)

Multistage centrifugal pumps

b)

Single stage pump

c)

Circulator pump

19.

It is a rotating component of a centrifugal pump that accelerates fluid outward from the center of rotation, thus transferring energy from the motor that drives the pump to the fluid being pumped.

a)

Impeller

b)

Coupling

c)

Shaft

d)

Stuffing Box

20.

Centrifugal pumps can also develop a phenomenon called “cavitation”.

a)

True

b)

False

21.

When the sealing is achieved by means of packing, the chamber is referred to as a ___________.

a)

Stuffing Box

b)

Nozzle

c)

Casing

d)

Seal Chamber

22.

A pump moves fluids from ___ pressure to ____ pressure.

a)

lower, higher

b)

lower, atmospheric

c)

higher, lower

d)

higher, atmospheric

23.

When the sealing is achieved by means of a mechanical seal, the chamber is commonly referred to as a ___________.

a)

Stuffing Box

b)

Nozzle

c)

Casing

d)

Seal Chamber

24.

Type of a centrifugal pump where the liquid enters at the center of the impeller and is directed out along the impeller blades in a direction at right angles to the pump shaft.

a)

Radial Flow Pump

b)

Mixed Flow Pump

c)

Axial Flow Pump

25.

Type of a centrifugal pump where the impeller pushes the liquid in a direction parallel to the pump shaft.

a)

Radial Flow Pump

b)

Mixed Flow Pump

c)

Axial Flow Pump

26.

Multistage centrifugal pump consists of two or more __________.

a)

Impellers

b)

Suction head

c)

Pump

27.

Multistage centrifugal pumps have the following two advantages except ______.

a)

to produce a high head

b)

has higher unbalanced thrust and radial forces at off-design flow rates

c)

to produce a large quantity of liquid

28.

Ferrous particles in liquid are not problematic when you are using magnetic drive.

a)

True

b)

False

29.

Low flow of liquid due to not priming properly cannot lead to overheating of the pump.

a)

True

b)

False

30.

A dead-head is caused when a centrifugal pump operates with no flow through the pump due to a closed discharge valve or blockage in the line.

a)

True

b)

False

31.

Its goal is to ensure that the pump is actually not moving the fluid downstream by confirming that there is no flow downstream or, in the case of liquid centrifugal pumps, the pump is primed or not in air lockup.

a)

True

b)

False

32.

1. What type of centrifugal pump is this?

a)

Frame-Mounted End Suction Pumps

b)

Inline End Suction Pumps

c)

Close-Coupled End Suction Pump

d)

no correct answers

33.

2. What is HVAC stand for?

a)

heating vent air conditioning

b)

heating vending air conditioning

c)

heating ventilating air conditioning

d)

heating vend air conditioning

34.

3. What is the rotating component of a centrifugal pump that accelerates fluid outward from the center of rotaion?

a)

couplers

b)

rotor

c)

impeller

d)

vavle

35.

4. End suction pumps usings a rotating impeller to convert mechanical energy into

a)

hydraulic energy

b)

chemical energy

c)

gravitational energy

d)

electrical energy

36.

5. fill the blank

(a)   captures the liquid's velocity as it enters the outermost diameter of an impeller and converts it into pressure.

37.

6. the strengths of firefighting centrifugal pump are:

a)

Provide a strong water flow and continuous

b)

Operate stable and easy to fix

c)

can match with some support device such as air tank

d)

all answers are correct

38.

7. which element is the best suited for centrifugal pumps as the mechanics involved lead to high liquid shear?

a)

the level of velocity

b)

the level of acceleration

c)

the level of height

d)

the level of light

39.

8.  Is end suction centrifugal pump suitable for handling abrasive or corrosive fluids without proper modifications?

a)

True

b)

False

40.

9. what type of this centrifugal pump?

4 lines
41.

10. what type of this centrifugal pump?

4 lines
42.

Pump is a device that

a)

add energy to the fluid

b)

extract energy from the fluid

43.

Gear pump is commonly used in application of

a)

high flow rate fluid

b)

high pressure fluid

c)

high viscosity fluid

44.

____________ is not a positive displacement pump type

a)

Piston pump

b)

Human heart

c)

Gear pump

d)

Centrifugal pump

45.

A ______________ pump is designed for relatively low discharge and a high head flow

a)

mixed flow

b)

axial flow

c)

radial flow

46.

___________is the moving part of a centrifugal pump

a)

Volute

b)

Impeller

c)

Diffuser

d)

Suction nozzle

47.

What is the function of snail-shaped volute

a)

to increase the velocity and to decrease the pressure

b)

to decrease the velocity and increase the pressure

48.

NPSH is

a)

Normal Pressure Suction Head

b)

Net Positive Suction Head

c)

Normal Pump Suction Head

49.

Priming is necessary for

a)

gear pump

b)

piston pump

c)

centrifugal pump

d)

diaphragm pump

50.

______________ is a problem to be avoided for reliable operation of a centrifugal pump.

a)

Priming

b)

Pump design

c)

Cavitation

51.

Centrifugal pump capacity can be increased by increasing the

a)

speed

b)

impeller diameter

c)

number of pump joined in parallel

d)

all of the above

52.

Which of the following is an application of pumps?

a)

Filling tanks

b)

Emptying trenches

c)

Supplying water to boilers

d)

All of the above

53.

What category of pumps uses impellers to generate centrifugal force?

a)

Dynamic pumps

b)

Centrifugal pumps

c)

Rotary pumps

d)

Positive displacement pumps

54.

What do the density and specific gravity affect in pump selection?

a)

The liquid's viscosity

b)

Net positive suction head

c)

The horsepower required by the pump

d)

The pressure that exists at the suction end of a pump

55.

What type of pump uses an impeller on a rotating shaft to generate pressure and move liquids to the outer casing within the pump and then out through the discharge shaft?

a)

Axial pump

b)

Rotary pump

c)

Centrifugal pump

d)

Reciprocating pump

56.

Which of the following is an advantage of a vertical centrifugal pump?

a)

It takes up more space.

b)

It can withstand higher operating temperatures.

c)

The motor is situated on top of the pump and must be removed to work on it.

d)

All of the above

57.

What specialty pumps would you use with liquids that are difficult to seal?

a)

Canned pumps

b)

Axial pumps

c)

High-speed centrifugal pumps

d)

Jet pumps

58.

Which of the following is an advantage of using lobe pumps?

a)

They are suitable for low-viscosity liquids.

b)

They have high suction abilities.

c)

They can handle slurries with a large particle size.

d)

They do not require factory service for repairs.

59.

What type of reciprocating pumps are driven by a motor, air, hydraulics, or direct-acting steam?

a)

Piston pumps

b)

Plunger pumps

c)

Diaphragm pumps

d)

Rotary pump

60.

What type of sealing arrangement for pumps is used in nontoxic, nonflammable, and nonpolluting applications?

a)

Mechanical packing

b)

Mechanical seal

c)

Physical seal

d)

Physical packing

61.

What type of seal system has a primary seal and a backup seal?

a)

Seal pot

b)

Seal flush

c)

Tandem seal

d)

Double seal

62.

What type of loads are perpendicular to the shaft?

a)

Axial

b)

Radial

c)

Mechanical

d)

Stationary

63.

How is the amount of head determined in a pump?

a)

By the height of the liquid

b)

By the weight of the liquid

c)

By the viscosity of the liquid

d)

By the temperature of the liquid

64.

What is the vertical distance between the centerline of a pump and the surface of the liquid on the suction side of the pump?

a)

Head

b)

Total head

c)

Discharge static head

d)

Suction static head

65.

Which of the following affects the discharge flow rate?

a)

Piping size

b)

Downstream vessel size

c)

Discharge head

d)

All of the above

66.

Which of the following is contained in the manufacturer's supply performance pump curve for centrifugal pumps?

a)

Head

b)

Flow rate

c)

Efficiency

d)

All of the above

67.

How is efficiency calculated with regards to the performance pump curve?

a)

The efficiency is the maximum flow rate at zero flow.

b)

The efficiency is the ratio of the liquid horsepower to the brake horsepower.

c)

The efficiency is normally based on evaluation with water.

d)

The efficiency is calculated using atmospheric pressure, vapor pressure, liquid height, and pressure drop.

68.

If the specific gravity of the material is less than 1.0, what is true of horsepower?

a)

Less horsepower is required.

b)

More horsepower is required.

c)

No horsepower is required.

d)

Horsepower will depend on the viscosity of the liquid.

69.

What problem can occur if the valves beyond the pump are incorrectly closed or blocked?

a)

Leakage

b)

Cavitation

c)

Overheating

d)

Overpressurization

70.

What problem can occur when the pressure on the eye of a pump impeller falls below the vapor pressure of the liquid being pumped?

a)

Leakage

b)

Cavitation

c)

Overheating

d)

Overpressurization

71.

Which of the following is a cause of cavitation?

a)

Flow rate too low

b)

Suction pluggage

c)

High liquid level

d)

Decrease in liquid temperature

72.

Which of the following is a consequence of abnormal speed in a pump?

a)

Cavitation

b)

Overheating

c)

Mechanical failure

d)

All of the above

73.

Which of the following is a consequence of excess vibration in a pump?

a)

Cavitation

b)

Overheating

c)

Mechanical failure

d)

All of the above

74.

What can cause vibration?

a)

Cavitation

b)

New bearings

c)

Low pump speed

d)

All of the above

75.

Which of the following should process technicians do when monitoring and maintaining pumps?

a)

Monitor oil levels

b)

Make sure water is collecting under the oil

c)

Check suction pressure across strainers/screens

d)

All of the above

76.

Which of the following is a typical step in the startup procedure for a pump?

a)

Warm up equipment.

b)

Check the seal flush system.

c)

Drain the pump.

d)

Close the pump suction.

77.

Which of the following is a typical step in the lockout/tagout procedure for a pump?

a)

Warm up equipment.

b)

Ensure the flow rate is as expected.

c)

Drain the pump.

d)

Shut off the pump.

78.

Which of the following is a typical step in the shutdown procedure for a pump?

a)

Cool down the equipment.

b)

Ensure the flow rate is as expected.

c)

Drain the pump.

d)

Close the suction and discharge valves.

79.

What are the key components of a piston pump that require regular lubrication for maintenance?

a)

Piston, cylinder, and seals

b)

Fan, belt, and filter

c)

Shaft, bearing, and gearbox

d)

Valve, hose, and motor

80.

How often should the piston seals and O-rings be inspected and replaced in a piston pump?

a)

Annually or as recommended by the manufacturer

b)

Every 2 months

c)

Never

d)

Every 5 years

81.

What are the common causes of piston pump cavitation and how can it be prevented?

a)

The common causes of piston pump cavitation include dirty pump filters, high pump speed, and excessive fluid temperature. It can be prevented by not cleaning pump filters, increasing pump speed, and using fluids with higher temperature.

b)

The common causes of piston pump cavitation include low pump speed, excessive NPSH, and low fluid viscosity. It can be prevented by increasing pump speed, ensuring inadequate NPSH, and using fluids with low viscosity.

c)

The common causes of piston pump cavitation include low pump speed, excessive NPSH, and low fluid viscosity. It can be prevented by increasing pump speed, ensuring adequate NPSH, and using fluids with low viscosity.

d)

The common causes of piston pump cavitation include high pump speed, insufficient NPSH, and excessive fluid viscosity. It can be prevented by reducing pump speed, ensuring adequate NPSH, and using fluids with suitable viscosity.

82.

What are the potential reasons for a drop in pressure output in a piston pump?

a)

Worn out seals, air leakage, or malfunctioning pressure relief valve

b)

Dirty filters

c)

Low fluid level

d)

Excessive fluid level

83.

What are the steps to take when a piston pump is experiencing excessive noise during operation?

a)

Increase the pump speed, replace the oil, and ignore the noise

b)

Check for cavitation, inspect for loose or worn parts, and ensure proper lubrication

c)

Replace the pump with a larger one, add more pressure to the system, and ignore the noise

d)

Reduce the pump speed, tighten all the bolts, and add more water to the system

84.

How can air leakage in the suction line be identified and resolved in a plunger pump?

a)

Replace the entire pump instead of inspecting the suction line

b)

Check for air bubbles in the pump inlet and use a pressure gauge to monitor suction pressure. Then, inspect and repair any loose fittings, damaged gaskets, or cracks in the suction line.

c)

Ignore the air bubbles and continue using the pump

d)

Use a pressure gauge to monitor discharge pressure

85.

What are the safety considerations when working with positive displacement pumps in a confined space?

a)

Using the pump in an enclosed space without ventilation

b)

Ignoring the presence of hazardous gases

c)

Wearing heavy clothing and gloves

d)

Ventilation, monitoring for hazardous gases, and having a rescue plan in place

86.

What are the precautions to take when handling hazardous fluids with a positive displacement pump?

a)

Use the pump without proper ventilation

b)

Dispose of the fluids in regular trash

c)

Wear appropriate personal protective equipment, ensure proper ventilation, use a containment system, and follow proper disposal procedures.

d)

Handle the fluids with bare hands

87.

small pump connected to a fire sprinkler system to maintain pressure in the sprinkler pipes.

a)

JOCKEY PUMP

b)

SUMP PUMP

c)

ROTARY PUMP

d)

CENTRIFUGAL PUMP

88.

This pumps are used for a variety of jobs. They can empty clogged sinks and drain rain from window wells

a)

UTILITY PUMP

b)

JOCKEY PUMP

c)

ROTARY PUMP

d)

SUMP PUMP

89.
a)

ROTARY PUMP

b)

SUMP PUMP

c)

JOCKEY PUMP

d)

UTILITY PUMP

90.
a)

ROTARY PUMP

b)

SUMP PUMP

c)

JOCKEY PUMP

d)

UTILITY PUMP

91.

This pumps are used to pump grey-sewage liquid from a septic tank to a leach field. Unlike sewage pumps which handle larger solids,

a)

EFFLUENT PUMP

b)

SUMP PUMP

c)

UTILITY PUMP

d)

ROTARY PUMP

92.

are an essential part of many water-based fire protection systems. They are used to increase the pressure (measured in psi and bar) of a water source when that source is not adequate for the system it's supplying

a)

BOOSTER PUMP

b)

ROTARY PUMP

c)

FIRE PUMP

d)

EFFLUENT PUMP

93.
a)

EFFLUENT PUMP

b)

FIRE PUMP

c)

SUMP PUMP

d)

BOOSTER PUMP

94.
a)

FIRE PUMP

b)

SUMP PUMP

c)

ROTARY PUMP

d)

BOOSTER PUMP

95.

This pump acts like an intermediary between the water source and endpoints like taps, faucets, and showers.

a)

BOOSTER PUMP

b)

SUMP PUMP

c)

ROTARY PUMP

d)

FIRE PUMP

96.

ThIs pumps are used where basement flooding happens regularly and to solve dampness where the water table is above the foundation of a home.

a)

ROTARY PUMP

b)

FIRE PUMP

c)

SUMP PUMP

d)

BOOSTER PUM

97.
a)

SUMP PUMP

b)

BOOSTER PUMP

c)

EFFLUENT PUMP

d)

FIRE PUMP

98.
a)

SUMP PUMP

b)

UTULITY PUMP

c)

CENTRIFUGAL PUMP

d)

FIRE PUMP

99.

This pump is a wastewater conveyance device. This pumps can be installed in the basement or in the yard. If installed in the yard, the holding tank must be buried deep enough that the pump and sewage pipes are below the frost line.

a)

FIRE PUMP

b)

GRINDER PUMP

c)

BOOSTER PUMP

d)

FIRE PUMP

100.

This pump is a pumping system used to remove waste water and sewage from a home when a bathroom, laundry room or any other type of plumbing fixture is located below the grade of the main sewer or septic line.

a)

SEWAGE EJECTOR PUMP

b)

WELL PUMP

c)

BOOSTER PUMP

d)

HAND PUMP

101.
a)

GRINDER PUMP

b)

HAND PUMP

c)

WELL PUMP

d)

FIRE PUMP

102.
a)

WELL PUMP

b)

SEWAGE EJECTOR PUMP

c)

UTILITY PUMP

d)

HAND PUMP

103.

This pumps push water from a well into a storage tank where it sits until you need it. This pumps use a pressure tank system that sends water from the reservoir or storage tank into your home’s plumbing.

a)

HAND PUMP

b)

WELL PUMP

c)

ROTARY PUMP

d)

SUMP PUMP

104.

This pumps are water-lifting devices that can be operated manually to withdraw water from surface water sources, groundwater sources and reservoirs, or to pump water into distribution systems.

a)

HAND PUMP

b)

WELL PUMP

c)

CENTRIFUGAL PUMP

d)

WATER PUMP

105.
a)

ROTARY PUMP

b)

WELL PUMP

c)

HAND PUMP

d)

SEWAGE EJECTOR PUMP

106.
a)

WELL PUMP

b)

HAND PUMP

c)

SUMP PUMP

d)

BOOSTER PUMP

107.
A single piston pump runs at  a ________ flow rate compared to other pumps.
a)
Higher 
b)
Lower 
c)
Medium 
d)
Growth 
108.
 What type of pump is a piston pump?
a)
Negative displacement pump
b)
Lil Pump
c)
Positive displacement pump
d)
Multi-Inverse Pump
109.
What is the flow rate range of a piston style pump?
a)
5-700 gpm
b)
10-10,000 gpm
c)
20-650 gpm
d)
60-900 gpm
110.
What is one advantage of a piston style pump?
a)
More tolerant to contamination 
b)
Less expensive 
c)
Least moving parts
d)
Wide range of pressure
111.
What’s one disadvantage of a piston style pump? 
a)
Least efficient 
b)
High internal leakage
c)
Higher operating costs
d)
Not designed for heavier fluids
112.
What is the maximum pressure  a balanced vane pumps handle?
a)
10,000 psi
b)
3,000 psi
c)
4,000 psi
d)
2,000 psi
113.
Vane pumps are ______ efficient than piston pumps, and ______ efficient than gear pumps. 
a)
More; less 
b)
Less; less
c)
More; more 
d)
Less; more
114.
Unbalanced vane pumps have ________ inside the pump.
a)
One inlet area and one outlet area
b)
One inlet area and two outlet areas
c)
Two inlet areas and one outlet area
d)
Two inlet areas and two outlet areas
115.
Vane pumps are ______ expensive than piston pumps, and ______ expensive than gear pumps. 
a)
Less; more
b)
Less; Less
c)
More; more
d)
More; less
116.
Vane pumps are ________ tolerant to contamination compaired to the other pump styles. 
a)
Most
b)
Moderately
c)
Not
d)
Least
117.
How many different types of gear pumps are there?
a)
1
b)
2
c)
3
d)
4
118.
How many gears are in a external gear pump?
a)
4
b)
1
c)
2
d)
3
119.
How many gears are in a internal gear pump?
a)
1
b)
2
c)
4
d)
3
120.
Which pump is least efficient?
a)
Piston
b)
Gear
c)
Vane
d)
Screw 
121.
What type of gear is in a gear pump?
a)
Spur
b)
Sector
c)
Pinion
d)
Helical
122.

What type of machine is a centrifugal pump?

a)

Mechanical

b)

Hydraulic

c)

Electrical

d)

None of them

123.

This is one of the components of a centrifugal pump: (a)   pipe

124.

How many types of centrifugal pump are there?

a)

10

b)

8

c)

7

d)

11

125.

(a)   pumps operate at a much larger flow rate with a decent increase in the head.

126.

In centrifugal pumps that have a single volute casing, the flow is discharged from the impeller and goes into one volute, which winds completely around the impeller

a)

Vertical Pumps

b)

Radial Pumps

c)

Double Suction Pump

d)

Single Volute Pump

127.

Centrifugal Pumps are commonly used in worldwide industrial (a)  

128.

This type of pumps are designed specifically for use in pumping chemicals.

a)

Chemical Pumps

b)

Axial Pumps

c)

Radial Pumps

d)

Trash Pumps

129.

What is the purpose of a pump in a pumping system?

a)

To heat up the fluid

b)

To decrease flow and reduce pressure of the fluid

c)

To generate flow and increase pressure of the fluid.

d)

To clean the fluid

130.

Explain the difference between centrifugal pumps and positive displacement pumps.

a)

Centrifugal pumps have a fixed amount of fluid output, while positive displacement pumps can vary output based on speed.

b)

Centrifugal pumps are more energy-efficient than positive displacement pumps due to their design.

c)

Centrifugal pumps use reciprocating motion to move fluid, while positive displacement pumps use centrifugal force.

d)

Centrifugal pumps convert rotational kinetic energy into fluid energy, while positive displacement pumps move fluid by trapping a fixed amount and forcing it through the system.

131.

What are the main components of a centrifugal pump?

a)

piston, cylinder, spark plug, exhaust pipe

b)

propeller, rudder, hull, anchor

c)

impeller, casing, shaft, bearings, seal

d)

gear, lever, pedal, brake pad

132.

Describe the working principle of a reciprocating pump.

a)

Reciprocating pumps work by utilizing a series of gears to move the fluid back and forth

b)

A reciprocating pump operates by converting rotary motion into reciprocating motion using a piston within a cylinder to draw in and pressurize fluid.

c)

The working principle of a reciprocating pump involves a continuous flow of fluid without any reciprocating motion

d)

A reciprocating pump operates by using a turbine to generate pressure in the fluid

133.

What is cavitation in pumps and how does it affect pump performance?

a)

Cavitation in pumps is the result of air bubbles in the liquid, improving pump efficiency.

b)

Cavitation in pumps is caused by excessive pressure, leading to increased pump performance.

c)

Cavitation in pumps is a process that enhances pump durability by reducing wear and tear.

d)

Cavitation in pumps is the formation of vapor bubbles in the liquid due to low pressure, leading to decreased pump performance.

134.

Discuss the importance of pump efficiency in pumping operations.

a)

High pump efficiency leads to increased maintenance costs

b)

Pump efficiency is important in pumping operations because it affects energy consumption, operating costs, and system performance.

c)

Pump efficiency has no impact on energy consumption

d)

System performance is not affected by pump efficiency

135.

How is NPSH (Net Positive Suction Head) important in pump selection?

a)

NPSH determines the pump color

b)

NPSH is irrelevant in pump selection

c)

NPSH is used to regulate pump speed

d)

NPSH is important in pump selection to prevent cavitation and ensure efficient pump operation.

136.

Explain the concept of pump curves and their significance in pump operation.

a)

Pump curves are essential in understanding how a pump will perform under different conditions and in determining the most efficient operating point.

b)

Pump curves are used to determine the color of the pump

c)

Pump curves are irrelevant in pump operation

d)

Pump curves are only applicable to small pumps

137.

What are the common types of pump seals used in industrial applications?

a)

mechanical seals, packing seals, and lip seals

b)

hydraulic seals

c)

bellows seals

d)

diaphragm seals

138.

Discuss the factors to consider when selecting a pump for a specific application.

a)

Speed, voltage, color

b)

Manufacturer, warranty, size

c)

Color, brand, weight

d)

Flow rate, head pressure, fluid type, temperature, pressure, material compatibility, power source, space, budget

139.

Multistage pumps are used for continuous______pressure and________capacity service.

a)

Low, High

b)

Low, Low

c)

High, Low

d)

High, High

140.

After priming______ the starting switch to determine proper rotation.

a)

Turn on

b)

Bump

c)

Wire

d)

Turn Off

141.

The valve on the_______side of a pump should be fully open.

a)

Discharge

b)

Suction

c)

Suction and Discharge

d)

Neither

142.

_______is the fitting used to connect piping through a well casing.

a)

Coupling

b)

Pitless Adapter

c)

Jet Fitting

d)

Underground Discharge Fitting

143.

What is the ∆ P if the suction gage reads 69.5 psig at position 3 and the discharge gage reads 100 psig at position 4?

a)

169.5 psig

b)

69.5 psig

c)

30.5 psig

d)

100 psig

144.

A gage on the supply side of a horizontal shaft fire pump will register:

a)

negative pressure

b)

positive pressure

c)

both a and b

d)

neither a or b

145.

All pumps have the same size?

a)

yes

b)

no

146.

which equipment is used to move fluids from one place to another

a)

compressor

b)

pump

c)

inlet

d)

outlet

147.

which equipment is used to move gas from one place to another?

a)

compressor

b)

pump

c)

inlet

d)

outlet

148.

how do pumps move liquids from one place to another?

a)

they add pressure to the fluid with speed (velocity)

b)

they add gas to the fluid

149.

which type of pumps are used to move 'thin'(delgados) fluids?

a)

compressors

b)

centrifugal pumps

c)

reciprocating pumps

150.

which type of pump is used to move thick (espeso) fluids?

a)

compressor

b)

centrifugal pump

c)

reciprocating pump

151.

which type of pump is used to move low (bajo) viscosity fluids?

a)

compressor

b)

centrifugal pump

c)

reciprocating pump

152.

which pump is used to move high (alto) viscosity liquids?

a)

compressor

b)

centrifugal pump

c)

reciprocating pump

153.

which type of pump uses impellers (impulsores) to move fluids?

a)

centrifugal pumps

b)

reciprocating pums

154.

which type of pump uses a plunger (embolo) to do suction of fluids?

a)

centrifugal pump

b)

reciprocating pump

155.

which picture shows impellers (impulsores)?

a)
b)
156.

which picture shows a plunger (embolo)?

a)
b)
157.

which pictures shows a reciprocating pump?

a)
b)
158.

in which part of the pump is fluid fed (alimentado)?

a)

inlet

b)

outlet

c)

impeller

159.

what is the direction of movement of the fluid?

a)

from the inlet to the outlet

b)

from the outlet to the inlet

160.

is this the inlet (entrada) of the pump?

a)

yes

b)

no

161.

is this the outlet (salida) of the pump?

a)

yes, it is

b)

no, it isn't

162.

which part of the centrifugal pump transfers the mechanical energy to the fluid?

a)

inlet

b)

outlet

c)

impeller

d)

plunger (embolo)

163.

How does fluid enter (ingresa) in the reciprocating pump?

a)

the piston or plunger is pulled back (halado hacia atrás)

b)

the piston or plunger is pushed back (empujado hacia adelante)

164.

How does the fluid leave (salir de) the reciprocating pump?

a)

by pulling back (halar hacia atrás) the plunger

b)

by pushing back (empujar hacia adelante) the plunger

165.

What is the primary function of a pump?

a)

To measure pressure

b)

To move fluids by mechanical action

c)

To generate electricity

d)

To filter air

166.

Which type of pump uses electromagnetism to move liquid metal or other conductive liquids?

a)

Velocity pump

b)

Electromagnetic pump

c)

Positive-displacement pump

d)

Impulse pump

167.

What is a characteristic of positive-displacement pumps?

a)

They are always submerged in the fluid they pump

b)

They operate by increasing the velocity of the fluid

c)

They are primarily used for low-viscosity fluids

d)

They can theoretically produce the same flow at a given rotational speed regardless of discharge pressure

168.

Which type of pump is known for having rollers that pinch a section of flexible tubing to move the liquid?

a)

Screw pump

b)

Gear pump

c)

Plunger pump

d)

Peristaltic pump

169.

What is a common application of reciprocating pumps?

a)

Generating electricity in power plants

b)

Filtering water in aquariums

c)

Pumping air in HVAC systems

d)

Pumping highly viscous fluids like concrete and heavy oils

170.

Which type of pump is typically used to pump engine oil in a motor vehicle?

a)

Gear pump

b)

Screw pump

c)

Rotary vane pump

d)

Peristaltic pump

171.

What is a hydraulic ram pump primarily used for?

a)

Pumping water to a higher elevation using hydropower

b)

Filtering water in ponds

c)

Generating electricity

d)

Pumping air into tires

172.

Which type of pump is also known as a centrifugal pump?

a)

Regenerative turbine pump

b)

Radial-flow pump

c)

Axial-flow pump

d)

Side-channel pump

173.

What is the main advantage of rotary positive-displacement pumps?

a)

They are primarily used for pumping air

b)

They are always submerged in the fluid they pump

c)

They are the cheapest type of pump

d)

They can handle highly viscous fluids with higher flow rates as viscosity increases

174.

What is the purpose of a relief or safety valve in a positive-displacement pump?

a)

To measure the pressure of the fluid

b)

To filter the fluid being pumped

c)

To prevent the pump from operating against a closed valve on the discharge side AKA a dead head

d)

To increase the flow rate

175.

What are the two types of vane pumps?

a)

Unbalanced and Balanced

b)

Rotational and Unbalanced

c)

Balanced and Rotary

d)

None of the above

176.

Which of the following vane pumps has only one inlet and one outlet?

a)

Balanced

b)

Rotary

c)

Unbalanced

d)

Rolling

177.

What is the highest temperature a vane pump can handle?

a)

700 F

b)

200 F

c)

1,000 F

d)

500 F

178.

Is the vane pump more efficient than a gear pump?

a)

True

b)

False

179.

What is the range of decibels for a vane pump?

a)

60 - 80 DB

b)

65 - 85 DB

c)

80 - 100 DB

d)

None of the above

180.

How many types of piston pumps are there?

a)

3

b)

2

c)

4

d)

1

181.

How does a piston pump work?

a)

By creating a suction and a pushing force

b)

By having another pump to create the pressure

182.

What is the basic application of a lift pump?

a)

Car

b)

Oil field

c)

Water Well

d)

None of the above

183.

The _____ of the swashplate in the axial pump effects displacement:

a)

Thickness

b)

Speed

c)

Angle

d)

Leakage

184.

_____ pumps organize its pistons parallel to the shaft.

a)

Lift

b)

Axial

c)

Radial

d)

Push

185.

What types of fluids are used with the gear pump?

a)

Oil

b)

Water

c)

Gas

d)

Sewage

186.

What is the most common reason of using a gear pump?

a)

High viscosity, low pressure

b)

Low viscosity, high pressure

c)

Low viscosity, low pressure

d)

High viscosity, high pressure

187.

What is the max PSI a gear pump can produce?

a)

10000 PSI

b)

500-2000 PSI

c)

2000-4000 PSI

d)

500-3000 PSI

188.

How much tolerance does the gear pump have to containments?

a)

meh tolerance

b)

Low tolerance

c)

high tolerance

d)

Medium tolerance

189.

Are Gear Pumps available also in variable displacement models?

a)

Yes

b)

No

190.

What is the efficiency range of a centrifugal pump?

a)

40 to 60%

b)

50 to 95%

c)

10 to 40%

d)

70 to 80%

191.

One of the applications of centrifugal pumps is (a)   process industries

192.

Centrifugal pumps convert mechanical energy into ______________

a)

electrical energy

b)

flow energy

c)

hydraulic energy

d)

none of them

193.

One of the failure points is Pump (a)  

194.

Normal maintenance intervals are quarterly, biannually or ________

a)

annually

b)

weekly

c)

monthly

d)

daiy

195.

Which one is not part of a centrifugal pump maintenance checklist?

a)

mechanical part inspection

b)

electrical testing

c)

Lubricant

d)

hydraulic inspection

196.

Pump is used to convert........................

a)

MECHANICAL ENERGY ------------> HEAT ENERGY

b)

HYDRAULIC ENERGY ------------> HEAT ENERGY

c)

POTENTIAL ENERGY ------------> MECHANICAL ENERGY

d)

MECHANICAL ENERGY ------------> HYDRAULIC ENERGY

197.

Centrifugal pump is the example of ..............................

a)

rotodynamic pump

b)

jet pump

c)

positive displacement pump

d)

piston pump

198.

Reciprocating pump is the example of ........................

a)

mixed flow pump

b)

rotodynamic pump

c)

deepwell pump

d)

positive displacement pump

199.

Foot valve including pump is.............................

a)

centrifugal pump

b)

reciprocating pump

c)

piston pump

d)

gear pump

200.

Cylinder ,piston, connecting rod including pump is .....................

a)

single stage centrifugal pump

b)

reciprocating pump

c)

rotodynamic pump

d)

multi stage centrifugal pump

201.

In multistage centrifugal pump for high discharge ,it shold be connected in.............................

a)

radial

b)

axial

c)

series

d)

parallel

202.

In multistage centrifugal pump for high Head ,it shold be connected in.............................

a)

series

b)

radial

c)

parallel

d)

axial

203.

Propeller pump is also called................................

a)

radial flow pump

b)

deepwell pump

c)

jet pump

d)

axial flow pump

204.

Air compressor need for ........................................

a)

centrifugal pump

b)

deepwell pump

c)

airlift pump

d)

reciprocating pump

205.

Reciprocating pump is a......................................

a)

High head pump

b)

Low head pump

c)

High discharge pump

d)

Low discharge pump

206.

What is the main component of a centrifugal pump?

a)

impeller

b)

pipe

c)

motor

d)

valve

207.

What is the purpose of an impeller in a centrifugal pump?

a)

To decrease fluid velocity

b)

To increase fluid velocity

c)

To generate heat

d)

To filter the fluid

208.

What is the function of a volute in a centrifugal pump?

a)

The function of a volute in a centrifugal pump is to filter the fluid.

b)

The function of a volute in a centrifugal pump is to increase the flow rate of the fluid.

c)

The function of a volute in a centrifugal pump is to cool down the fluid.

d)

The function of a volute in a centrifugal pump is to convert the high-velocity fluid from the impeller into a pressure head.

209.

What is the purpose of a casing in a centrifugal pump?

a)

To reduce the efficiency of the pump.

b)

To prevent fluid from entering the pump.

c)

To increase the speed of fluid flow.

d)

To enclose and support pump components and direct fluid flow.

210.

What is the role of a shaft in a centrifugal pump?

a)

To transmit power from the motor to the impeller

b)

To provide stability and support to the impeller

c)

To prevent leakage of fluid from the pump

d)

To control the flow rate of the pump

211.

What is the function of a bearing in a centrifugal pump?

a)

To increase the speed of the pump.

b)

To support the rotating shaft and reduce friction between moving parts.

c)

To regulate the flow rate of the pump.

d)

To prevent the pump from overheating.

212.

What is the purpose of a seal in a centrifugal pump?

a)

To allow easy access for maintenance and repairs.

b)

To prevent leakage of fluid from the pump casing.

c)

To increase the flow rate of the pump.

d)

To reduce the efficiency of the pump.

213.

What is the role of an inlet in a centrifugal pump?

a)

To regulate the flow rate of the fluid

b)

To cool down the pump

c)

To prevent fluid entry into the pump

d)

To allow fluid entry and direct it towards the impeller.

214.

What is the function of a diffuser in a centrifugal pump?

a)

To regulate the temperature of the pump

b)

To reduce the pressure energy of the pump

c)

To convert kinetic energy into pressure energy

d)

To increase the flow rate of the pump

215.

What is the purpose of a discharge outlet in a centrifugal pump?

a)

To prevent the flow of fluid

b)

To increase the pressure of the fluid

c)

To release pressurized fluid and direct it to the desired location or system.

d)

To cool down the pump

216.

Which among the following pumps have a definite amount of discharge?

a)

Positive displacement pumps

b)

Non-positive displacement pumps

c)

Self-priming pumps

d)

Jet pumps

217.

Pumps used in hydraulic applications are

a)

Positive displacement pumps

b)

Variable displacement pumps

c)

Fixed displacement pumps

d)

All the above

218.

Volumetric efficiency is the ratio of

a)

Theoretical flow rate to actual flow rate

b)

Actual flow rate to theoretical flow rate

c)

Actual fluid power to pump input power

d)

None of the above

219.

Which of the following is a hydrodynamic pump?

a)

Vane pump

b)

Gear pump

c)

Centrifugal pump

d)

Piston pump

220.

What causes suction of fluid into the gear pump?

a)

when pressure drops during disengagement of teeth at the suction side

b)

when pressure increases during disengagement of teeth at the suction side

c)

when pressure drops during engagement of teeth at the suction side

d)

when pressure increases during engagement of teeth at the suction side

221.

Variable displacement pumps used in hydraulic applications can

1. have variable flow rate

2. consume less energy

3. be operated with high accuracy for slow and rapid motion

4. generate more heat

a)

1 and 2

b)

3 and 4

c)

1, 2 and 3

d)

All the above

222.

Which type of displacement is observed in gear pumps?

a)

Only variable displacement

b)

Only fixed displacement

c)

Both fixed and variable displacement

d)

None of the above

223.

What prevents the leakage of oil inside an unbalanced vane pump?

a)

Vanes

b)

Screw

c)

Cylindrical rotor

d)

Difference between pressure of inlet and outlet

224.

Which among the following are not the main selection criteria for selection of hydraulic pumps?

a)

Discharge

b)

Pressure

c)

Speed

d)

Weight

225.

Which force causes vanes to come out of the rotor slots?

a)

Centripetal force

b)

Centrifugal force

c)

Friction force

d)

None of the above

226.

What causes internal leakage in internal gear pump?

a)

Less tolerance level between the meshing surfaces

b)

More tolerance level between the meshing surfaces

c)

No tolerance between the meshing surfaces

d)

None of the above

227.

Which of the following statements is false for vane pumps?

a)

Wear in contact surfaces occurs due to continuous contact between vane tips and the cam ring

b)

Elliptical cam ring is replaced by round cam ring to reduce unbalanced forces

c)

Different sizes of cartridge kits can be replaced in same vane pump

d)

None of the above

228.

In pressure compensated vane pump,

1. having variations in eccentricity between rotor and cam ring gives variable displacement

2. as eccentricity between rotor and cam decreases, flow of fluid decreases

3. as eccentricity between rotor and cam decreases, flow of fluid increases

4. having variations in eccentricity between rotor and cam ring gives fixed displacement

a)

1 and 3

b)

3 and 4

c)

2 and 4

d)

1 and 2

229.

What is the difference between vane pump and radial piston pump?

a)

In radial piston pump, radial slots in vane pumps are replaced by radial bores which accommodate pistons

b)

In radial piston pump, radial slots in vane pumps are replaced by radial bores which accommodate swash plate

c)

In radial piston pump, radial slots in vane pumps are replaced by radial bores which accommodate both swash plate and pistons

d)

None of the above

230.

When the angle of swash plate decreases

a)

Flow rate increases

b)

Flow rate decreases

c)

Flow rate does not depend on swash plate angle

d)

None of the above

231.

Which of the following statements are true?

1. piston pumps are self priming

2. piston pumps require high maintenance

3. piston pumps have low cost of production

4. piston pumps have low volumetric efficiency

a)

1 and 2

b)

3 and 4

c)

1 and 3

d)

2 and 3

232.

What is the maximum angle between cylinder block and shaft axis?

a)

30o

b)

50o

c)

45o

d)

60o

233.

What is the function of Interstage coolers?

a)

To reduce the temperature of the air

b)

Used as storage and smoothened

c)

To remove the traces of moisture

d)

To prevent dust from entering the compressor

234.

In a lobe pump, the output may be slightly ______ because of the smaller number of ______ elements.

(a)  

235.

Mechanical efficiency indicates the amount of energy losses that occur for reasons other than leakage.

a)

True

b)

False

236.

A fuel pump drawn into a solenoid switch until it opens a set of contacts to turn off the current.

a)

Mechanical fuel pump

b)

Turbo fuel pump

c)

Electric fuel pump

237.

A mechanical device that moves fluid or gas by pressure or suction.

a)

Fuel tank

b)

Fuel pump

c)

Fuel gauge

238.

Fuel pump that actuating lever moves up and down constantly, but pulls the diaphragm down only as needed to refill the pump chamber.

a)

Turbo fuel pump

b)

Mechanical fuel pump

c)

Electric fuel pump

239.

Explain the difference between centrifugal pumps and positive displacement pumps.

a)

Centrifugal pumps have a fixed amount of fluid output, while positive displacement pumps can vary output based on speed.

b)

Centrifugal pumps are more energy-efficient than positive displacement pumps due to their design.

c)

Centrifugal pumps use reciprocating motion to move fluid, while positive displacement pumps use centrifugal force.

d)

Centrifugal pumps convert rotational kinetic energy into fluid energy, while positive displacement pumps move fluid by trapping a fixed amount and forcing it through the system.

240.

The pump discharge pressure (PDP) is the total pressure needed to overcome all friction, appliance, and elevation loss while maintaining adequate ____ pressure to deliver effective fire streams.

a)

pump

b)

nozzle

c)

back

d)

flow

241-248.

Answer the questions below after watching the video

241.

In the video, name the two (2) basic types of pumps discussed.

a)

Centrifugal and Axial pumps

b)

Positive Displacement and Dynamic pumps

c)

Peristaltic and Gear pumps

d)

Compressor and Blower pumps

242.

What is the main characteristic of positive displacement pumps?

a)

They are more efficient at high flow rates

b)

They have closed volumes for fluid movement

c)

They are commonly used for gases

d)

They have rotating impeller blades

243.

Name the three (3) main types of dynamic pumps mentioned in the video.

a)

Peristaltic, Gear, and Double screw pumps

b)

Centrifugal, Axial, and Mixed flow pumps

c)

Compressor, Blower, and Fan pumps

d)

Positive Displacement, Rotary, and Reciprocating pumps

244.

How is the pump efficiency been defined?

a)

Volume flow rate divided by the head pressure

b)

Motor power divided by the pump power

c)

Flow rate multiplied by the pump head

d)

Useful power delivered to the fluid divided by the shaft power

245.

What is the main reason for the inefficiency of a pump at extreme flow rates?

a)

High fluid density

b)

Incorrect impeller blade design

c)

Zero head or zero flow rate

d)

Leakage through the pump

246.

What is the significance of the Best Efficiency Point (BEP) on a pump performance curve?

a)

It represents the point of lowest power consumption

b)

It indicates the maximum flow rate of the pump

c)

It shows the highest head pressure achievable

d)

It marks the point of zero efficiency

247.

How does the pump performance curve change when the pipe length is increased?

a)

The curve becomes steeper

b)

The curve shifts to the left

c)

The curve becomes linear

d)

The curve shifts to the right

248.

What is the main takeaway regarding pump specifications from the lesson?

a)

Pump performance is not affected by fluid density

b)

Understanding the trade-off between head and flow rate is crucial

c)

Pump efficiency is independent of head and flow rate

d)

Maximum head and flow rate can be achieved simultaneously

249.

2 Bar = ..... Pa

a)

200

b)

200.000

c)

2000

d)

20.000

250.

373W = ..... HP

a)

5

b)

0,5

c)

3,73

d)

37,3

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