m₁ m₂ = r₁ r₂
m₁ r₂ = m₂ r₁
None of these
m₁ r₁ = m₂ r₂

## Theory of Machine The maximum fluctuation of energy is the

Ratio of the mean resisting torque to the work-done per cycle
Variations of energy above and below the mean resisting torque line
Difference between the maximum and minimum energies
Sum of the maximum and minimum energies

## Theory of Machine The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of joints and h = number of higher pairs)

n = 3(l - 1) - 2j - h
n = 2(l - 1) - 3j - h
n = 3(l - 1) - 3j - h
n = 2(l - 1) - 2j - h

## Theory of Machine The example of lower pair is

All of these
Automobile steering gear
Straight line motion mechanisms
Shaft revolving in a bearing

## Theory of Machine Which of the following is an example of sliding pair?

Lead screw of a lathe with nut
Piston and cylinder of a reciprocating steam engine
Shaft with collars at both ends fitted into a circular hole
Ball and a socket joint