✅ The correct answer is option D.
Mechanical Engineering MCQs
Moment of inertia of a circular section about its diameter (d) is
πd3/16
πd3/32
πd4/32
πd4/64
✅ The correct answer is option D.
A fine grained steel
is less tough and has a greater tendency to distort during heat treatment
is more ductile and has a less tendency to distort during heat treatment
is less tough and has a less tendency to distort during heat treatment
is more ductile and ha
✅ The correct answer is option B.
The divergent portion of a venturimeter is made longer than convergent portion in order to
avoid the tendency of breaking away the stream of liquid
to minimise frictional losses
both (a) and (b)
none of these
✅ The correct answer is option C.
A pendulum which executes one beat per second is known as
simple pendulum
compound pendulum
torsional pendulum
second’s pendulum
✅ The correct answer is option D.
In spot welding, the spacing between two spot weld should not be less than
d
1.5 d
3 d
6 d
✅ The correct answer is option C.
The frictional power (F.P.) is given by
F.P. = B.P. – I.P.
F.P. = I.P. – B.P.
F.P. = B.P./I.P.
F.P. = I.P./B.P.
✅ The correct answer is option B.
The included angle for the V-belt is usually
10°-20°
30°-40°
40°-60°
60°-80°
✅ The correct answer is option B.
The metal is subjected to mechanical working for
refining grain size
reducing original block into desired shape
controlling the direction of flow lines
all of these
✅ The correct answer is option D.
For the isochronous Porter governor, the controlling force curve is a straight line passing through the origin.
Correct
Incorrect
✅ The correct answer is option A.