Theory of Machine
The example of completely constrained motion is a

Motion of a piston in the cylinder of a steam engine
Motion of a shaft with collars at each end in a circular hole
All of these
Motion of a square bar in a square hole

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Unbalanced forces are not dangerous at higher speeds
Unbalanced couples are caused only at higher speeds
Effects of unbalances are proportional to the square of the speed
Effects of unbalances are directly proportional to the speed

ANSWER DOWNLOAD EXAMIANS APP