Theory of Machine
Kinematic pairs are those which have two elements that

Have surface contact
Permit relative motion
Are held together
Have line contact

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
For dynamic balancing of a shaft

The net couple due to the dynamic forces acting on the shaft is equal to zero
None of these
Both (A) and (B)
The net dynamic force acting on the shaft is equal to zero

ANSWER DOWNLOAD EXAMIANS APP