carburising process
surface hardening process
core-hardening process
none of these
✅ The correct answer is option B.
Mechanical Engineering MCQs
The width of cutting edge of a parting-off tool varies from
3 to 12 mm
5 to 20 mm
8 to 30 mm
15 to 40 mm
✅ The correct answer is option A.
The wet bulb depression indicates __________ humidity of the air.
absolute
relative
specific
✅ The correct answer is option B.
The ideal angle of banking provided on the curves on roads depends upon
weight of the vehicle
(velocity)2 of the vehicle
nature of the road surface
coefficient of frictio
✅ The correct answer is option B.
The tail stock set over method of taper turning is preferred for
internal tapers
small tapers
long slender tapers
steep tapers
✅ The correct answer is option C.
Longitudinal vibrations are said to occur when the particles of a body moves
perpendicular to its axis
parallel to its axis
in a circle about its axis
none of these
✅ The correct answer is option B.
The ratio of the isothermal power to the shaft power or brake power of the motor or engine required to drive the compressor is called overall isothermal efficiency.
TRUE
FALSE
✅ The correct answer is option A.
The surface tension of mercury at normal temperature is __________ that of water.
same as
lower than
higher than
✅ The correct answer is option C.
The evaporator used in house-hold refrigerators is
frosting evaporator
non-frosting evaporator
defrosting evaporator
none of these
✅ The correct answer is option A.