water level indicatior
pressure gauge
safety valve
all of these
✅ The correct answer is option D.
Mechanical Engineering MCQs
The elongation of a conical bar under its own weight is __________ that of prismatic bar of the same length.
equal to
half
one-third
two-third
✅ The correct answer is option C.
When a body of mass m attains a velocity v from rest in time t, then the kinetic energy of translation is
mv2
mgv2
0.5 mv2
0.5 mgv2
✅ The correct answer is option C.
When the Mach number is less than unity, the flow is called
sub-sonic flow
sonic flow
super-sonic flow
hyper-sonic flow
✅ The correct answer is option A.
Silicon is added in low carbon steels to
make the steel tougher and harder
make the steel of good bending qualities
raise the yield point
all of these
✅ The correct answer is option A.
Pitch point of a cam is
a point on the pitch curve having minimum pressure angle
a point on the pitch curve having maximum pressure angle
any point on the pitch curve
any point on the pitch
✅ The correct answer is option B.
The unit cost in case of batch production is __________ as compared to jobbing production.
same
low
high
✅ The correct answer is option B.
According to I.B.R., the thickness of the boiler shell should not be less than
4 mm
5 mm
6 mm
7 mm
✅ The correct answer is option D.
When the vehicle is at rest, the clutch is in engaged position.
Correct
Incorrect
✅ The correct answer is option A.
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is
✅ The correct answer is option C.