N/mm2
kN/mm2
N/m2
any one of these
✅ The correct answer is option D.
Mechanical Engineering MCQs
Benson boiler is a __________ water tube steam boiler using forced circulation of water.
low pressure
high pressure
✅ The correct answer is option B.
Wein’s law states that the wave length corresponding to __________ is proportional to the absolute temperature.
minimum energy
maximum energy
✅ The correct answer is option B.
The percentage carbon content in wrought iron is about
0.02
0.1
2
0.4
✅ The correct answer is option A.
The heat absorbed during a polytropic process is
x Workdone
all of these
✅ The correct answer is option D.
A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be
lack of cooling water
water temperature being high
dirty condenser surface
all of these
✅ The correct answer is option D.
The cutting tools are made from
nickel steel
chrome steel
nickel-chrome steel
high speed steel
✅ The correct answer is option D.
The overall efficiency for a Pelton wheel lies between
0.50 to 0.65
0.65 to 0.75
0.75 to 0.85
0.85 to 0.90
✅ The correct answer is option D.
In a kinematic chain, a quaternary joint is equivalent to
one binary joint
two binary joints
three binary joints
four binary joints
✅ The correct answer is option C.
The water tubes in a simple vertical boiler are
horizontal
vertical
inclined
✅ The correct answer is option C.