conduction
free convection
forced convection
radiation
✅ The correct answer is option C.
Mechanical Engineering MCQs
Air refrigeration cycle is used in
commercial refrigerators
domestic refrigerators
air-conditioning
gas liquefaction
✅ The correct answer is option D.
The hydraulic gradient line is always parallel to the centre line of the pipe.
Correct
Incorrect
✅ The correct answer is option B.
A Pelton wheel with one nozzle is preferred for a specific speed between 35 to 60 r.p.m.
TRUE
FALSE
✅ The correct answer is option B.
In gear hobbing
only hob rotates
only gear blank rotates
both hob and gear blank rotates
neither hob nor gear b
✅ The correct answer is option C.
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.
less than
equal to
more than
✅ The correct answer is option A.
Euler’s equation can be used for
radial flow compressors
axial flow compressors
pumps
all of these
✅ The correct answer is option D.
The change of entropy, when heat is removed from the gas, is positive.
Yes
No
✅ The correct answer is option B.
M.T.M. is used to
improve existing methods
establish time standards
develop effective methods in advance of the beginning of production
all of the above
✅ The correct answer is option D.
A beam which is fixed at one end and free at the other is called
simply supported beam
fixed beam
overhanging beam
cantilever beam
✅ The correct answer is option D.