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.

A higher compression ratio causes __________

A. increase in detonation
B. pre-ignition
C. an acceleration in the rate of combustion
D. any one of the mentioned
Answer» E.
Discussion
2.

Solid fuel fabricated into various small shapes, which are assembled to form fuel elements, is in the form of __________

A. pallets
B. plates
C. pins
D. all of the mentioned
Answer» E.
Discussion
3.

The fuels in order of decreasing knock tendency for spark ignition engines are __________

A. Paraffin, aromatic, napthene
B. Paraffin, napthene, aromatic
C. Napthene, aromatics, paraffin
D. Napthene, paraffin, aromatic
Answer» C. Napthene, aromatics, paraffin
Discussion
4.

The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be __________

A. 20%
B. 25%
C. 50%
D. 55%
Answer» D. 55%
Discussion
5.

Pre-ignition is caused by the spontaneous combustion of the mixture before the end of the compression stroke, and is due to __________

A. overheated spark plug points
B. red hot carbon deposits on cylinder walls
C. cylinder walls being too hot
D. any of the mentioned
Answer» E.
Discussion
6.

What is the purpose of testing an internal combustion engine?

A. to conform the data used in design, the validity of which may be doubtful
B. to satisfy the customer regarding the performance of the engine
C. to determine the information, which cannot be obtained by calculations
D. all of the mentioned
Answer» E.
Discussion
7.

The reference fuels for knock rating of spark ignition engines would include __________

A. normal octane and aniline
B. iso-octane and normal hexane
C. iso-octane and alpha-methyl naphthalene
D. normal heptane and iso-octane
Answer» E.
Discussion