121. The length of a simple pendulum which gives the same frequency as the compound pendulum, is
kG + l1
kG2 + l1
✅ The correct answer is option C.
Theory of machines MCQs
122. The axis of precession is __________ to the plane in which the axis of spin is going to rotate.
parallel
perpendicular
✅ The correct answer is option B.
123. The frictional torque transmitted by a cone clutch is same as that of
flat pivot bearing
flat collar bearing
conical pivot bearing
truncated conical pivo
✅ The correct answer is option D.
124. The angle of inclination of the plane, at which the body begins to move down the plane is called
angle of friction
angle of repose
angle of projection
none of these
✅ The correct answer is option B.
125. The magnitude of linear velocity of a point B on a link AB relative to point A is (where ω = Angular velocity of the link AB)
ω x AB
ω (AB)2
ω2 x AB
(ω x AB)2
✅ The correct answer is option A.
126. In a Proell governor, the balls are attached to the extension of lower links.
TRUE
FALSE
✅ The correct answer is option A.
127. In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called
lead
steam lap
exhaust lap
none of these
✅ The correct answer is option B.
128. When a body is subjected to transverse vibrations, the stress induced in a body will be
shear stress
bending stress
tensile stress
compressive, stress
✅ The correct answer is option B.
129. The power from the engine to the rear axle of an automobile is transmitted by means of
worm and worm wheel
spur gears
bevel gears
Hooke’s joint
✅ The correct answer is option D.
130. Whitworth quick return motion mechanism is an inversion of a double slider crank chain.
Correct
Incorrect
✅ The correct answer is option B.