Power Engineering 4th Class unit B 7 chapter 1 Exam 2025 Questions and Answers

Power Engineering 4th Class unit B 7
chapter 1 Exam 2025 Questions and
Answers


The reciprocating motion of a steam engine is converted to rotary motion:

Choose one answer.

a. At the end of the piston stroke

b. In the steam cylinder

c. By the camshaft

d. At the crankshaft


e. By the valve gear - CORRECT ANSWER✔️✔️-d


Which of the following is a prime mover ?

Choose one answer.

a. An electric generator

b. A gas turbine

c. A centrifugal pump


FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1

, d. An air compressor


e. A boiler - CORRECT ANSWER✔️✔️-b


The term "prime mover" refers to:

Choose one answer.

a. All heat engines

b. A device that uses a source of energy to produce mechanical motion

c. Electric motors only

d. Steam and gas turbines only


e. thermal generating stations - CORRECT ANSWER✔️✔️-b


A "heat engine" is an operating cycle that uses a working fluid to convert:

Choose one answer.

a. Thermal energy to chemical energy

b. Chemical energy to mechanical energy

c. Thermal energy to electrical energy

d. Mechanical energy to electrical energy


e. Thermal energy to mechanical energy - CORRECT ANSWER✔️✔️-e


A steam engine piston:

Choose one answer.




FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2