151. A pair is said to be a kinematic pair, if the relative motion between them is completely or successfully constrained.
Correct
Incorrect
✅ The correct answer is option A.
Theory of machines MCQs
152. A mechanism is an assemblage of
two links
three links
four or more than four links
all of these
✅ The correct answer is option C.
153. When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the
tension in the tight side of the belt
tension in the slack side of the belt
sum of the tensions on the tight side and slack side of the belt
average tension of the
✅ The correct answer is option D.
154. A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard ?
All points of the disc have the same velocity
The centre of the disc has zero acceleration
The centre of the disc has centrifugal acceleration
The point on the disc
✅ The correct answer is option B.
155. The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
0° and 90°
180° and 360°
both (a) and (b)
none of these
✅ The correct answer is option C.
156. The effort of a Porter governor is equal to (where c = Percentage increase in speed, m = Mass of ball, and M = Mass on the sleeve)
c(m – M)g
c(m + M)g
✅ The correct answer is option B.
157. A shaft carrying two rotors at its ends will have
no node
one node
two nodes
three nodes
✅ The correct answer is option B.
158. When the nature of contact between the elements of a pair is such that it can turn or revolve about a fixed axis, the pair is known as a rolling pair.
Correct
Incorrect
✅ The correct answer is option B.
159. In a simple train of wheels, the velocity ratio __________ the intermediate wheels.
depends upon
is independent of
✅ The correct answer is option B.
160. In a multiple V-belt drive, all the belts should stretch at the same rate.
Agree
Disagree
✅ The correct answer is option A.