[A]. perfect
[B]. imperfect
[C]. deficient
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✅ The correct answer is option B.
Mechanical Engineering MCQs
A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.
[A]. equal to
[B]. less than
[C]. greater than
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✅ The correct answer is option C.
The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge)
[A]. Q = Cd x b2g(H2 – H1)
[B]. Q = Cd x b2g(H21/2 – H11/2)
[C]. Q = Cd x b2g(H23/2 – H13/2)
[D]. Q = Cd x b2g(H22 – H12)
✅ The correct answer is option C.
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in __________ of the piston.
[A]. one stroke
[B]. two strokes
[C]. three strokes
[D]. four strokes
✅ The correct answer is option B.
Crystal structure of a material is, generally, examined by
[A]. naked eye
[B]. optical microscope
[C]. metallurgical microscope
[D]. X-ray techniques
✅ The correct answer is option D.
two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are
[A]. 15 N and 5 N
[B]. 20 N and 5 N
[C]. 15 N and 15 N
[D]. none of these
✅ The correct answer is option A.
The turbine, in which the general direction of the steam flow is parallel to the turbine axis, is called axial flow turbines
[A]. True
[B]. False
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✅ The correct answer is option A.
When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as
[A]. internally fired boiler
[B]. externally fired boiler
[C]. natural circulation boiler
[D]. forced circulation boiler
✅ The correct answer is option D.
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will __________ the knocking tendency.
[A]. not effect
[B]. decrease
[C]. increase
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✅ The correct answer is option C.
Which of the following represents a heat pump?
[A].
[B].
[C].
[D].
✅ The correct answer is option B.