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Steam Power Plant (Elements)

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Which of the following shows the relationship of the steam consumption and the load of steam turbine -generator?

a)

Dalton's line

b)

Willan's line

c)

Jonval's line

d)

Rankine line

2.

The isentropic efficiency of a turbine is given by

a)

the ratio of actual to ideal energy extracted

b)

the ratio of actual of ideal energy inputted

c)

the ratio of ideal to actual energy extracted

d)

None of the choices

3.

One of the following tasks which is an example of preventive maintenance is

a)

cleaning the cup on a rotary cup burner

b)

cleaning a completely clog oil strainer

c)

replacing a leaking valve

d)

replacing a blown fuse

4.

When the number of reheat stages in a reheat cycle is increased, the average temperature

a)

increases

b)

decreases

c)

is constant

d)

is zero

5.

A simultaneous generation of electricity and steam (or heat) in a single power plant.

a)

Gas turbine

b)

Steam turbine

c)

Waste heat recovery

d)

Cogeneration

6.

Is one whose pressure is higher than the saturation pressure corresponding to its temperature.

a)

Compressed liquid

b)

Saturated liquid

c)

Saturated vapor

d)

Superheated vapor

7.

What is commonly used done to system when the turbine has excessive moisture?

a)

Frosting

b)

Diffusing

c)

Reheating

d)

Dehumidifying

8.

Total solid impurities in feed water for a boiler depend upon

a)

boiler pressure

b)

quantity of steam to be generated

c)

type of fuel available

d)

quantity of steam

9.

A high pressure chamber or a device in which the paths of rapidly moving particles can be observed and photographed.

a)

Cloud Chamber

b)

Combustion chamber

c)

Fission chamber

d)

Air chamber

10.

The water level inside the boiler is indicated by the

a)

Baffles

b)

Fusible Plug

c)

Water walls

d)

Water Column

11.

What is the highest pressure under which distinguishable liquid and vapor phases can exist in equilibrium

a)

Maximum pressure

b)

Atmosphere

c)

Critical pressure

d)

Peak pressure

12.

Flows through the nozzles and diffusers with increasing fluid velocity will create an equivalent

a)

decrease in the static enthalpy of fluid

b)

increase in the static enthalpy of fluid

c)

decrease in the internal energy of fluid

d)

decrease in the dynamic enthalpy of fluid

13.

 All of the following mechanism can supply heat to a thermodynamic system except

a)

Conduction

b)

Natural convection

c)

Adiabatic Expansion

d)

Radiation

14.

Is the locus of states which have the same value of stagnation enthalpy and mass flux are called :

a)

Fanno Line

b)

Straight Line

c)

Willan's Line

d)

Cross Cut Line

15.

Generally steam turbines in power station operate at

a)

3000 rpm

b)

1000 rpm

c)

4000 rpm

d)

575 rpm