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Basic Hydraulics Mod 1

Total questions: 50

Worksheet time: 26mins

Name
Class
Date
1.

Advantages of Hydraulics include:

a)

Provide a lot of force

b)

Smoothly control components

c)

Accurately control components

d)

All of these statements are correct.

2.

Fluid power is a method of using ____________________ to transmit energy.

a)

Mechanical Force

b)

Pressurized Electricity

c)

Pressurized Fluid

d)

Pumped Concrete

3.

All hydraulic systems consist of 5 basic components. These components are:

a)

Power input device, control knobs, power output devices, conducting wires, liquid

b)

Power input device, control devices, power output devices, conductors, liquid

c)

Input/output device, Control device, conductors, grease

d)

All statements are correct

4.

A hydraulic pumps shaft is rotated by an external device called a ________________________.

a)

Prime Motor

b)

Prime Delivery

c)

Prime Mover

d)

Prime Conveyor

5.

Hydraulic Control devices control ____________, pressure, and flow of pressurized oil in the actuator lines.

a)

PSI

b)

Other Devices

c)

Mechanical Power

d)

Direction

6.

Which of the following is NOT a type of fixed displacement pump?

a)

Vane

b)

Gear

c)

Piston

d)

Rod

7.

What is the main function of a needle valve?

a)

Control Pressure

b)

Control the speed of an actuator

c)

Turn on and off flow

d)

Reduce pressure spikes

8.

What increases as hydraulic flow increases to a hydraulic motor?

a)

Rotary Shaft Speed

b)

Linear Displacement

c)

Torque

d)

Hydraulic Pressure

9.

It's important for a hydraulic system to contain what?

a)

Air bubbles

b)

No air bubbles

c)

Compressible fluid

d)

Compressible gas

10.

Where can you look on your car to see a good example of a basic piston-driven hydraulic system?

a)

The power steering system

b)

The instrument panel

c)

The brake system

d)

The radio system

11.

The great thing about hydraulic systems is that the pipe connecting the two cylinders can be__________

a)

Disconnected, yet still operate

b)

Any length and shape

c)

Filled with air

d)

All of the above

12.

Large hydraulic machines usually have these to hold the difference in the volume of oil displaced by the two sides of the cylinder

a)

Large diameter lines

b)

Men with buckets

c)

External reservoirs

d)

Extra piston

13.

Which of the following statements explains fluid power.

a)

Fluid power is the method of using pressurized fluid to transmit energy

b)

Fluid power is the method of using pressurized fluid to transmit motion.

c)

Fluid power is the method of using pressurized fluid to transmit machines

d)

Fluid power is the method of using pressurized air to transmit energy

14.

What are the two branches of Fluid Power.

a)

Pneumatics and Hydrogen

b)

Pneumatics and Horsepower

c)

Pneumatics and Hydraulics

d)

Pneumatics and Horoscops

15.

Hydraulic systems use ________ to transfer force from one point to another.

a)

Air

b)

Liquid

c)

Solid

d)

Gas

16.

All industrial hydraulic systems consist of the following basic components:

a)

Power input device

Control Device

Liquid

Conductors

Power Output device

Hydraulic jack

b)

Power input device

Control Device

Liquid

Power Output device

c)

Power input device

Control Device

Liquid

Conductors

Power Output device

d)

Power input device

Control Device

Power Output device

17.

Name this schematic symbol.

a)

3/2 hand lever valve

b)

4/2 hand lever valve

c)

4/3 hand lever valve with shutoff position

d)

2/2 way stem actuated

18.

Which of these is a hydraulic pump unit?

a)
b)
c)
d)
19.

Which one of these is a manual shutoff valve?

a)
b)
c)
d)
20.

Which one of these is a hydraulic filter?

a)
b)
c)
d)
21.

Which of these is a spring loaded, pilot operated check valve?

a)
b)
c)
d)
22.

Which is a spring operated check valve?

a)
b)
c)
d)
23.

Which of these is a hydraulic tank symbol?

a)
b)
c)
d)
24.

Which of these is a diaphragm accumulator with shutoff block?

a)
b)
c)
d)
25.

Which of the following is a 2/2 stem actuated valve?

a)
b)
c)
d)
26.

Name this schematic symbol.

a)

Check valve

b)

Spring operated check valve

c)

Spring loaded, pilot operated check valve

d)

Shuttle valve

27.

Which of these is a single acting actuator?

a)
b)
c)
d)
28.

Which of these is a double acting actuator?

a)
b)
c)
d)
29.

Which pump uses an impeller?

a)

Piston pump

b)

Vane pump

c)

Gear pump

d)

Non-positive-displacement pump

30.

What pushes oil into a positive-displacement pump's inlet?

a)

Pilot oil

b)

Atmospheric Pressure

c)

Case pressure

d)

Signal pressure

31.

Which of the following pumps has the most tolerance for dirt contamination?

a)

Gear pump

b)

Vane pump

c)

Piston pump

d)

All pumps have equal tolerance for contamination

32.

Which of the following has a high volumetric efficiency?

a)

Gear pump

b)

Vane pump

c)

Piston pump

d)

All pumps have equal volumetric efficiency

33.

Which of the following has the best mechanical efficiency?

a)

Gear pump

b)

Vane pump

c)

Piston pump

d)

All pumps pumps have equal mechanical efficiency.

34.
Where would you most likely find gear pumps?
a)
Farm equipment
b)
Hospitals
c)
Vehicles
d)
Precision machines
35.

Fluid in a fluid power system can be

a)

a liquid

b)

a gas

c)

a gas or a liquid

d)

difficult

36.

Hydraulic devices transmit power using

a)

an incompressible fluid

b)

a compressible fluid

c)

an incompressible gas

d)

a compressible gas

37.

Which Hydraulic component may be shown many times in a schematic without indicating that there are more than one of that component?

a)

Pump

b)

Cylinder

c)

Vented Reservoir

d)

Directional Control Valve

38.

The rod side area that produces the pull force on a double acting cylinder is called what?

a)

Blind Area

b)

Cap Area

c)

Annular Area

d)

Rod Area

39.

Pascal's Law states that pressure in a confined fluid is equal and acts ______________________________

a)

on each flat surface

b)

perpendicular to all surfaces

c)

only at the bottom of the vessel

d)

only against the external load

40.

How can the area of a circle be calculated?

a)

πr2\pi r^2

b)

π d24\pi\ \frac{d^2}{4}

c)

0.7854d20.7854d^2

d)

All of these

41.

The needle valve adjustment screw has a tapered end to adjust the size of the ______________.

a)

orifice

b)

vane

c)

valve body

d)

pressure

42.

Which type of flowmeter must be oriented in a vertical position?

a)

Rotameter

b)

Turbine

c)

Piston

d)

Vane

43.

Most hydraulic motors are modified designs of what?

a)

Cylinders

b)

Pumps

c)

Gears

d)

Flow Control Valves

44.

Which one is a non positive pump?

a)

Gear pump

b)

Vane Pump

c)

Piston Pump

d)

None of these

45.

What is the function of Accumulator?

a)

Shock absorber

b)

Temporary oil supply

c)

Create pressure

d)

Create shock

46.

Which component is used to limit the system pressure?

a)

Relief valve

b)

Reducing Valve

c)

Spool

d)

Cylinder

47.

Which component allows only one way flow?

a)

Check valve

b)

Spool

c)

Cylinder

d)

Motor

48.

What do you mean by orrifice?

a)

Low restriction

b)

Cavitation

c)

Narrow passage

d)

None of these

49.

If you apply same pressure to the head end and rod end of a cylinder, then what will happen?

a)

Cylinder will not move

b)

Cylinder will extend

c)

Cylinder will retract

50.

The basic idea behind any hydraulic system is very simple: Force that is applied at one point is tranitted to another point using________

a)

A compressible fluid

b)

An incompressible fluid

c)

A cold compress

d)

A hot compress

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