increase in cutting temperature
weakening of tool
friction and cutting forces
all of these
✅ The correct answer is option D.
Mechanical Engineering MCQs
The width of the bucket for a Pelton wheel is generally __________ the diameter of jet.
double
three times
four times
five times
✅ The correct answer is option D.
The maximum shear stress developed in a beam of circular section is __________ the average shear stress.
equal to
4/3 times
1.5 times
twice
✅ The correct answer is option B.
In a watch, the spring is used to store strain energy. This energy is released
to stop the watch
to run the watch
to change the time
all of these
✅ The correct answer is option B.
The heating of air, without any change in its specific humidity, is known as sensible heating.
TRUE
FALSE
✅ The correct answer is option A.
The polar modulus for a solid shaft of diameter (D) is
✅ The correct answer is option B.
Valve overlap is the number of degrees of camshaft rotation during which
both valves are closed
both valves are open
both ‘a’ and ‘b’
none of these
✅ The correct answer is option B.
The damper fluid leakage typically occur from
upper damper mounting
bottom of damper
clearance between inner and outer tubes of damper
coil spring mounting
✅ The correct answer is option C.
For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be
one-half the height of chimney
equal to the height of chimney
two times the height of chimney
four times the height
✅ The correct answer is option B.