Explore topic-wise MCQs in Power Plant.

This section includes 108 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.

101.

In gas turbine, intercooler is placed

A. before low pressure compressor
B. in between low pressure compressor and high pressure compressor
C. in between high pressure compressor and turbine
D. None of the mentioned
Answer» C. in between high pressure compressor and turbine
102.

The heating value of gaseous fuels is about

A. 500 kJ/litre
B. 30 kJ/litre
C. 100 kJ/litre
D. 10 kJ/litre
Answer» C. 100 kJ/litre
103.

What is the importance of the freezing point of the working fluid in the vapour power cycle?

A. freezing point of working fluid should be below the room temperature
B. freezing point of working fluid should be above the room temperature
C. freezing point of working fluid should be equal to the room temperature
D. does not have any importance
Answer» B. freezing point of working fluid should be above the room temperature
104.

The 'work ratio' increases with

A. increase in turbine inlet pressure
B. decrease in compressor inlet temperature
C. decrease in pressure ratio of the cycle
D. all of the mentioned
Answer» E.
105.

The following method(s) can be used to improve the thermal efficiency of open cycle gas turbine plant

A. inter-cooling
B. Reheating
C. Regeneration
D. All of the mentioned
Answer» E.
106.

The maximum efficiency of Rankine cycle (ηr) is the function of

A. the mean temperature of heat addition (Tm) only
B. the mean temperature of heat addition (Tm) and temperature of steam at the exit of the turbine
C. the mean temperature of heat addition (Tm) and temperature of steam at the entry of the turbine
D. the mean temperature of heat addition (Tm) and temperature of steam at exit of the condenser
Answer» B. the mean temperature of heat addition (Tm) and temperature of steam at the exit of the turbine
107.

The gas turbine power plant mainly uses which among the following fuels?

A. Coal and Peat
B. Kerosene oil and diesel oil and residual oil
C. Gas oil
D. Natural gas and liquid petroleum fuel
Answer» E.
108.

What efficiencies of thermionic power generator have been realised?

A. 50-60%
B. 40-50%
C. 10-20%
D. 30-40%
Answer» D. 30-40%