Explore topic-wise MCQs in Power Plant.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.

1.

Which one of the following is an advantage of reheat cycle?

A. the size of the Low pressure (LP) turbine blades is reduced because specific volume is reduced by 7 to 8%
B. the reheating reduce 4 to 5% fuel consumption with a corresponding reduction in the fuel handling
C. lower steam pressures and temperatures and less costly materials can be used to obtain the required thermal performance
D. all of the mentioned
Answer» E.
Discussion
2.

Reheat is preferred for the plants having efficiency greater than _____________

A. 150MW
B. 200MW
C. 100MW
D. 250MW
Answer» D. 250MW
Discussion
3.

The optimum reheat pressure for most of the modern power plants is ___________ of the initial steam pressure.

A. 0.1-0.5
B. 0.2-0.3
C. 0.2-0.25
D. 0.25-0.3
Answer» D. 0.25-0.3
Discussion
4.

The cycle efficiency in a single reheat plant is influenced by _____________

A. pressure at tubine inlet
B. pressure at which steam is reheated
C. temperature at which steam is reheated
D. temperature at tubine inlet
Answer» C. temperature at which steam is reheated
Discussion
5.

Why don t we use more than two reheats?

A. not economical
B. increased mechanical stresses
C. net efficiency is decreased
D. all of the mentioned
Answer» E.
Discussion
6.

Efficiency of cycle will increase due to Reheating if _____________

A. mean temperature of heat addition in boiler is higher than in reheat process
B. mean temperature of heat addition in boiler is lower than in reheat process
C. it will increase without any conditions
D. it will not increase
Answer» B. mean temperature of heat addition in boiler is lower than in reheat process
Discussion
7.

Reheating of steam _____________

A. decreases steam rate
B. increases steam rate
C. no effect on steam rate
D. none of the mentioned
Answer» B. increases steam rate
Discussion