5001. In nuclear power plants, due to reflector, less fuel is needed to generate sufficient neutrons to sustain a chain reaction.
Yes
No
✅ The correct answer is option A.
Mechanical Engineering
Prepare with the best Mechanical Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers core topics such as engineering mechanics, thermodynamics, strength of materials, theory of machines, fluid mechanics, heat transfer, manufacturing processes, machine design, and power plant engineering. These Mechanical Engineering multiple-choice questions are designed for students, fresh graduates, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving ability with our updated and comprehensive Mechanical Engineering MCQs.
5002. Manometric head, in case of a centrifugal pump, is equal to
Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
Workdone per kN of water – Losses within the impeller
Energy per kN at outlet of impeller – Energy per kN at inlet of impeller
all of the above
✅ The correct answer is option D.
5003. In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be
0.3
0.6
0.67
1.5
✅ The correct answer is option B.
5004. Cut-off governing of steam engines is a method of controlling the engine output by varying
volume of intake steam
pressure of intake steam
temperature of intake steam
all of these
✅ The correct answer is option A.
5005. If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about
17:01
15:01
13:01
10:01
✅ The correct answer is option D.
5006. The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called
compressor efficiency
volumetric efficiency
isothermal efficiency
mechanical efficiency
✅ The correct answer is option D.
5007. A traction control system (TCS) in automobiles controls the
vibrations on the steering wheel
engine power during acceleration
torque that is transmitted by the tyres to the road surface
stopping distance in case of emergency
✅ The correct answer is option C.
5008. In a reaction turbine, the draft tube is used
to run the turbine full
to prevent air to enter the turbine
to increase the head of water by an amount equal to the height of the runner outlet above the tail race
to transport water to downstream
✅ The correct answer is option C.
5009. The ratio of workdone per cycle to the stroke volume of the compressor is known as
compressor capacity
compression ratio
compressor efficiency
mean effective pressure
✅ The correct answer is option D.
5010. Which of the following is the lightest and most volatile liquid fuel?
Gasoline
Kerosene
Fuel oil
✅ The correct answer is option A.