Agree
Disagree
✅ The correct answer is option A.
Mechanical Engineering MCQs
The lower calorific value of fuel may be obtained by adding the heat of steam formed during combustion to the higher calorific value.
Yes
No
✅ The correct answer is option B.
If the clearance ratio for a reciprocating air compressor is ‘K’, then its volumetric efficiency is given by
✅ The correct answer is option B.
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ . The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be
τ/2
τ
2 τ
4 τ
✅ The correct answer is option B.
The shear force of a cantilever beam of length l carrying a uniformly distributed load of w per unit length is __________ at the fixed end.
zero
wl/4
wl/2
wl
✅ The correct answer is option D.
The efficiency of a lifting machine is the ratio of
output to the input
work done by the machine to the work done on the machine
mechanical advantage to the velocity ratio
all of the above
✅ The correct answer is option D.
During dehumidification process, __________ remains constant.
wet bulb temperature
relative humidity
dry bulb temperature
specific humidity
✅ The correct answer is option C.
In a mixed flow centrifugal pump, the flow through the impeller is a combination of radial and axial flows.
Correct
Incorrect
✅ The correct answer is option A.
The centre of suspension and centre of percussion are not interchangeable.
Correct
Incorrect
✅ The correct answer is option B.