[A]. perfect
[B]. imperfect
[C]. deficient
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✅ The correct answer is option B.
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.
If p1, is the pressure of air entering the L.P. cylinder and p2 is the pressure of air leaving the L.P. cylinder (or intercooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D1 = Dia. of L.P. cylinder, and D2 = Dia. of H.P. cylinder)
[A]. D1/D2 = p1p2
[B]. D1/D2 = p1/p2
[C]. D1/D2 = p2/p1
[D]. none of these
✅ The correct answer is option C.