pd/t
pd/2t
pd/4t
pd/6t
✅ The correct answer is option C.
Mechanical Engineering MCQs
Carnot cycle has maximum efficiency for
petrol engine
diesel engine
reversible engine
irreversible engine
✅ The correct answer is option C.
The reconditioning process used to give cylinder bore surfaces a cross-hatch pattern, is known as
honing
porous plating
boring
shot peening
✅ The correct answer is option A.
The effect of vapour locking on the brake performance is that the
brakes function more effectively
brakes fail completely
brake operation is delayed after depression of the brake pedal
vapour locking has no
✅ The correct answer is option B.
Clutch facings are usually attached to the plate by
steel rivets
brass rivets
aluminium screws
steel screws
✅ The correct answer is option B.
The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ω = Angular velocity of the cam shaft)
ω(r1 – r2)sin θ
ω(r1 + r2)sinθ sec2θ
ω(r1 – r2)cos θ
ω(r1 + r2)cos θ cosec2
✅ The correct answer is option B.
The process which improves the machinability of steels, but lowers the hardness and tensile strength, is
normalising
full annealing
process annealing
spheroidising
✅ The correct answer is option D.
The cooling of air, without any change in its specific humidity, is known as sensible cooling.
Correct
Incorrect
✅ The correct answer is option A.
When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to
✅ The correct answer is option B.
Antifriction bearings are
thick lubricated bearings
plastic bearings
thin lubricated bearings
ball and roller bearin
✅ The correct answer is option D.