3.5/C.O.P.
C.O.P/3.5
3.5 x C.O.P.
none of these
✅ The correct answer is option A.
Mechanical Engineering MCQs
The rate of flow of steam is __________ in case of fire tube boilers.
less
more
✅ The correct answer is option A.
The engine torque increases with the increase in engine speed up to a certain point after which it starts to fall down.
Correct
Incorrect
✅ The correct answer is option A.
A dynamometer is a device used for the measurement of
chip thickness ratio
forces during metal cutting
wear of the cutting tool
deflection of the cutt
✅ The correct answer is option B.
The condition of refrigerant as it leaves the compressor in a vapour compression system is
saturated liquid
wet vapour
dry saturated vapour
superheated vapour
✅ The correct answer is option D.
The function of a D-slide valve is to exhaust steam from the cylinder at proper moment.
Correct
Incorrect
✅ The correct answer is option A.
A thin cylindrical shell of diameter (d) length (l) and thickness (t) is subjected to an internal pressure (p). The longitudinal stress in the shell is
pd/t
pd/2t
pd/4t
pd/6t
✅ The correct answer is option C.
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.
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.
Antifriction bearings are
thick lubricated bearings
plastic bearings
thin lubricated bearings
ball and roller bearin
✅ The correct answer is option D.