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PPS NG BABYCAKES KOH

Total questions: 74

Worksheet time: 38mins

Name
Class
Date
1.


It refers to one consisting of two or more pressure stages, pressure stage consists of a nozzle or diaphragm block and one row of moving impulse blades?

a)

Pressure-Compounded Impulse Turbine

b)

Velocity Compounding

c)

Impulse Turbine Blading

d)

Reaction Turbine Blading

2.


Which of the following are NOT included in pressure compounding with the comparison from the velocity compounding?

a)

Equal velocity drop for each stage

b)

Not equal pressure drop per stage

c)

Equal power per stage

d)

No problem with steam leak

3.


If the pressure drops take place in the nozzles, which are located in a nozzle or diaphragm block ahead of the row of blades, it is being called?

a)

Pressure-Compounded Impulse Turbine

b)

Velocity Compounding

c)

Reaction Turbine Blading

d)

Impulse Turbine Blading

4.


Which of the following are shaped in such a way that the space through which the steam passes is smaller than that through which steam enters?

a)

Impulse blades

b)

Reaction turbine

c)

Impulse turbine

d)

Reaction blades

5.

It refers to a steam is supplied to a set of fixed nozzles wherein the steam pressure falls and gains in velocity?

a)

Impulse blades

b)

Reaction turbine

c)

Reaction blades

d)

Impulse turbine

6.


It refers to the blades shaped that the entrance to a row of blades is of the same approximate size and shape as the exit from the row of blades?

a)

Reaction turbine

b)

Impulse turbine

c)

Impulse blades

d)

Reaction blades

7.


It refers to a steam passes through the fixed blading and gains in velocity, it then impinges upon the moving blades to give an impulsive effect?

a)

Impulse blades

b)

Reaction turbine

c)

Impulse turbine

d)

Reaction blades

8.

What is the basic principle behind the operation of a steam turbine?

a)

Water injection

b)

Fuel combustion

c)

Steam condensation

d)

Steam expansion

9.


Which type of steam turbine is commonly used for low to medium power applications due to its simplicity and cost-effectiveness?

a)

Impulse turbine

b)

Radial-flow turbine

c)

Reaction turbine

d)

Axial-flow turbine

10.


Which type of steam turbine is characterized by a single set of stationary nozzles and moving blades?

a)

Impulse turbine

b)

Reaction turbine

c)

Axial-flow turbine

d)

Radial-flow turbine

11.

 

What is the primary function of the blades in a steam turbine?

a)

Control steam temperature

b)

Convert heat to mechanical energy

c)

Generate steam

d)

Condense steam

12.

 

Which of the following types of seal consist of annular rings machined on the shaft which ride in projections of the labyrinth packing strip?

a)

Carbon glands

b)

Water seal

c)

Double-labyrinth packing

d)

Labyrinth seal

13.


It refers to permit axial adjustment of the turbine rotor of the steam turbine engine?

a)

Bearing case

b)

Oil ring

c)

Thrust bearing

d)

Sealing ring

14.


Which of the following type of coupling couplings consist of a flange provided with external claws running parallel to the shaft to which it is secured?

a)

Pin type coupling

b)

Claw type coupling

c)

Flexible coupling

d)

Rubber bushing

15.


Which of the following a steel band fitted at the outer circumference of the blades for the following purposes to reinforce the entire blading assembly?

a)

Lacing wire

b)

Locking ring

c)

Shroud ring

d)

Wire ring

16.

Which of the following is contains the turbine and protect the device component from external influence and damage and it may also support the bearings on which the shafts rest to provide rigidity to the shaft?

a)

Casing

b)

Casting

c)

Packing

d)

Glands

17.


If this wire is passed through the mating hole in the blading about its mid length and crimped at each end, it is being called?

a)

Shroud ring

b)

Lacing wire

c)

Locking ring

d)

Wire ring

18.

 

It refers to have two spur gears on flanges mounted on each shaft. Teeth on these gears are continually in mesh with corresponding internal gears machined on a sleeve?

a)

Claw type coupling

b)

Flexible coupling

c)

Gear type coupling

d)

Pin type coupling

19.


It refers to a devices used in maneuvering or for minor changes in speed, varies the steam chest pressure for controlling the speeds of turbine?

a)

By-pass

b)

Nozzle control valves

c)

Speed regulating governor

d)

Throttle valve

20.

 

It refers to a ring or series of ring fitted in a turbine shaft at high pressure end, the purpose of the dummy piston is to prevent the rotor from shifting longitudinally?

a)

Dummy piston

b)

Lacing wire

c)

Shroud ring

d)

Truck piston

21.


It refers to the power transmitting device and is used to transmit the rotational movement of the blades connected to it at one end via the rotor to the coupling?

a)

Blades

b)

Shafts

c)

Nozzle

d)

Casing

22.

 

It refers to be used to connect turbine and driven shafts for the following reasons to allow for differences in expansion?

a)

Claw type coupling

b)

Flexible coupling

c)

Pin type coupling

d)

Rubber bushing

23.

Which of the following type consist of a number of coupling bolts secured to one half of the coupling; these bolts pass through rubber or leather bushing secured to the other half of the coupling?

a)

Claw type coupling

b)

Flexible coupling

c)

Pin type coupling

d)

Rubber bushing

24.

 

Which of the following device used to minimize leakage of steam through the clearance provided between moving and stationary parts of turbine?

a)

Turbine blade

b)

Turbine gland

c)

Turbine shaft

d)

Turbine rotor

25.

It refers to attached into the wheel of the shaft or to the enlarge portion of the shaft called drum?

a)

Impulse blades

b)

Moving blades

c)

Stationary blades

d)

Reaction blades

26.

Which of the following are designs in such a way as to produce maximum rotational energy by directing the flow of the steam along its surface?

a)

Blades

b)

Nozzle

c)

Casing

d)

Shafts

27.


Which of the following are frequently used to seal the diaphragms of an impulse turbine from the shaft, in which case they consist of only one ring?

a)

Carbon glands

b)

Double-labyrinth packing

c)

Labyrinth seal

d)

Water seal

28.


It refers to main components of rankine cycle that supplied high pressure of feed water into the boiler for generation?

a)

Condenser

b)

Boiler

c)

Feed pump

d)

Turbine

29.

It refer to the enthalpy of wet steam at given pressure or temperature in rankine cycle?

a)

Wp

b)

H4

c)

H3

d)

Wt

30.

Which of the following main components of the rankine cycle store exhaust steam from the expansion system of the turbine?

a)

Condenser

b)

Boiler

c)

Feed pump

d)

Turbine

31.


If the difference between the enthalpy of superheated vapor at given pressure and temperature minus the enthalpy of saturated wet steam at given pressure or temperature, it being called

a)

Output efficiency work

b)

Output pump work

c)

Output thermal work

d)

Output turbine work

32.

It refers to the entropy of saturated liquid at .010 Mpa from table 2?

a)

Sfg

b)

Sf

c)

Wt

d)

X4

33.

If the ratio of the difference between the turbine work out put and the pump  work divided by the heat added, it is being called?

a)

Cycle efficiency

b)

Output efficiency

c)

Rankine efficiency

d)

Thermal efficiency

34.

Which of the following process if the high pressure liquid enters a boiler where it is heated at constant pressure by an external heat source to become a dry saturated vapour?

a)

Process 1-2

b)

Process 2-3

c)

Process 3-4

d)

Process 4-1

35.

 

If the ratio of the difference between the turbine work out put and the pump  work divided by the heat added, it is being called? 

a)

Cycle efficiency

b)

Thermal efficiency

c)

Output efficiency

d)

Rankine efficiency

36.


Which of the following process if the wet vapours enter a condenser where it is condensed at a constant pressure to become a saturated liquid?

a)

Process 1-2

b)

Process 2-3

c)

Process 3-4

d)

Process 4-1

37.

 

It refers to a enthalpy of superheated vapor at given pressure or temperature of rankine cycle?


a)

h3

b)

H4

c)

Wt

d)

Wp

38.

Which of the following refers to a cycle is an idealized thermodynamic cycle of a heat engine that converts heat into mechanical work?

a)

Steam cycle

b)

Working fluid cycle

c)

Efficiency cycle

d)

Rankine cycle

39.


It refers to an intricate array of alternate stationary and rotating aero foil-section blades?

a)

The axial compressor

b)

The compressor

c)

The turbine

d)

The combustion system

40.


Which of the typically made up of a ring of fuel injectors that inject a steady stream of fuel into combustion chambers where it mixes with the air?

a)

The axial compressor

b)

The compressor

c)

The combustion system

d)

The turbine

41.

It refers to draws air into the engine, pressurizes it, and feeds it to the combustion chamber at speeds of hundreds of miles per hour?

a)

The compressor

b)

The axial compressor

c)

The combustion system

d)

The turbine

42.


Which of the following device or machine used to convert superheated steam to de-superheated mounted on rankine cycle process?

a)

Steam boiler

b)

Heat engine

c)

Turbine engine

d)

Steam turbine

43.


Which of the following components used into energy of steam and convert into electrical energy?

a)

Turbine

b)

Feed pump

c)

Boiler

d)

Condenser

44.

Which of the following refer to work out of the pump express the unit of kj/kg?

a)

Wt

b)

H4

c)

Wp

d)

H3

45.

 

If the ratio of the difference between the turbine work out put and the pump  work divided by the heat added, it is being called? 

a)

Cycle efficiency

b)

Output efficiency

c)

Rankine efficiency

d)

Thermal efficiency

46.

It refers to a machine or equipment used to convert low pressure of fresh water to high pressure and supplies to the boiler in rankine cycle process?

a)

Feed pump

b)

Turbine

c)

Condenser

d)

Steam boiler

47.

If the working fluid is pumped from low to high pressure. As the fluid is a liquid at this stage the pump requires little input energy, it refers to?

a)

Process 1-2

b)

Process 2-3

c)

Process 3-4

d)

Process 4-1

48.

 

It refers to work output of turbine express in unit of kj/kg in rankine cycle?

a)

H3

b)

H4

c)

Wt

d)

Wp

49.

Which of the following type of bearing is similar to shaft bearings used on reciprocating engines, are used only on small turbines?

a)

Plain bearing

b)

Journal bearing

c)

Thrust bearing

d)

Shaft radial bearing

50.


Which of the following is consists of the turbine shaft and the attached moving blade and the absorb energy from working fluid (steam, gas, water etc) and converts that energy into mechanical energy?

a)

Blades assembly

b)

Casing assembly

c)

Shaft assembly

d)

Rotor assembly

51.

Which of the following type of bearing must absorb a much greater amount of end thrust?

a)

Plain bearing

b)

Thrust bearing

c)

Shaft radial bearing

d)

Journal bearing

52.

 

It refers to a type of seal that consist of a centrifugal pump runner secured to the turbine shaft and rotating in a chamber which is machined into the turbine casing?

a)

Carbon glands

b)

Double-labyrinth packing

c)

Labyrinth seal

d)

Water seal

53.

Which of the following where the blades are shaped in such a way that the space through which the steam passes is smaller than that through which steam enters?

a)

Pressure-Compounded Impulse Turbine

b)

Velocity Compounding

c)

Impulse Turbine Blading

d)

Reaction Turbine Blading

54.

What effect does an increase in steam pressure have on the efficiency of a steam turbine?

a)

Increases efficiency

b)

Decreases efficiency

c)

No impact on efficiency

d)

Depends on the blade design

55.

Which of the following device use to prevent leakage of high-pressure steam to the atmosphere and of air, into the low pressure side?


a)

Steam seal

b)

Turbine gland

c)

Steam casing

d)

Thrush bearing

56.


If the alternate row of fixed and moving blades attached to the casing and the rotor respectively, form passageways which serve fixed and free nozzle, these being called?

a)

Impulse blades

b)

Impulse turbine

c)

Reaction blades

d)

Reaction turbine

57.


It refers to a term applied only to impulse turbines which the stage is consists of two or more rows of moving impulse blades separated by rows of stationary blades?

a)

Impulse Turbine Blading

b)

Pressure-Compounded Impulse Turbine

c)

Reaction Turbine Blading

d)

Velocity Compounding

58.


Which of the following blades are secured to the casing; the moving blades, to a wheel; and a bank of nozzles directs steam against the first row of moving blades?

a)

Impulse blades

b)

Moving blades

c)

Reaction blades

d)

Stationary blades

59.

 

Which of the following types of engine in which the mechanical device extracts thermal energy from pressurized steam, and converts it into rotary motion?

a)

Gas Steam turbine

b)

Reciprocating steam engine

c)

Steam turbine

d)

Steam engine

60.


Which of the following listed below is NOT included for the disadvantages of a turbine?

a)

There are fewer moving and contact friction parts

b)

Low starting power

c)

Not directly reversible, astern turbine required

d)

Manoeuvring can be slightly sluggish

61.


If the pressure drops take place in the nozzles, which are located in a nozzle or diaphragm block ahead of the row of blades, it is being called?

a)

Impulse Turbine Blading

b)

Reaction Turbine Blading

c)

Pressure-Compounded Impulse Turbine

d)

Velocity Compounding

62.


It refers to a steam is supplied to a set of fixed nozzles wherein the steam pressure falls and gains in velocity?

a)

Impulse blades

b)

Reaction turbine

c)

Impulse turbine

d)

Reaction blades

63.


Which of the following is NOT belongs on velocity compounding with the comparison into the pressure compounding?

a)

Not equal power per stage

b)

Not recommended for more than two stages

c)

Not equal pressure drop per stage

d)

Not equal velocity drop for each stage


64.


It refers to the dry saturated vapor expands through a turbine, generating power. This decreases the temperature and pressure of the vapour?

a)

Process 2-3

b)

Process 4-1

c)

Process 1-2

d)

Process 3-4

65.

If the ratio of the difference between the turbine work out put and the pump  work divided by the heat added, it is being called?

a)

Rankine efficiency

b)

Cycle efficiency

c)

Output efficiency

d)

Thermal efficiency

66.

It refers to a machine or equipment used to convert low pressure of fresh water to high pressure and supplies to the boiler in rankine cycle process?

a)

Steam boiler

b)

Condenser

c)

Turbine

d)

Feed pump

67.

 

It refers to the entropy of saturated liquid at .010 Mpa from table 2?

a)

Sf

b)

Wt

c)

Sfg

d)

X4

68.


If the working fluid is pumped from low to high pressure. As the fluid is a liquid at this stage the pump requires little input energy, it refers to?

a)

Process 1-2

b)

Process 2-3

c)

Process 3-4

d)

Process 4-1

69.


Which of the following main components of the rankine cycle store exhaust steam from the expansion system of the turbine?

a)

Condenser

b)

Boiler

c)

Feed pump

d)

Turbine

70.


It refer to the enthalpy of wet steam at given pressure or temperature in rankine cycle?

a)

H3

b)

Wp

c)

Wt

d)

H4

71.


It refers to main components of rankine cycle that supplied high pressure of feed water into the boiler for generation?

a)

Boiler

b)

Feed pump

c)

Condenser

d)

Turbine

72.

anong pangalan ng kabit ni sir?

(a)  

73.


It refers to work output of turbine express in unit of kj/kg in rankine cycle?

a)

H3

b)

H4

c)

Wt

d)

Wp

74.

Which of the following process if the high pressure liquid enters a boiler where it is heated at constant pressure by an external heat source to become a dry saturated vapour?

a)

Process 1-2

b)

Process 3-4

c)

Process 2-3

d)

Process 4-1