Downward
Upward
Backward
Forward

1, 3 and 4
1, 2 and 4
1, 2 and 3
2, 3 and 4

## Theory of Machine Which one of the following can completely balance several masses revolving in different planes on a shaft?

A single mass in one of the planes of the revolving masses
A single mass in different planes
Two equal masses in any two planes
Two masses in any two planes

## Theory of Machine The example of successfully constrained motion is a

Motion of the shaft between a footstep bearing
Piston reciprocating inside an engine cylinder
Motion of an I.C. engine valve
All of these

## Theory of Machine A governor is said to be stable, if the

Radius of rotation of balls increases as the equilibrium speed decreases
Radius of rotation of balls decreases as the equilibrium speed increases
Radius of rotation of balls decreases as the equilibrium speed decreases
Radius of rotation of balls increases as the equilibrium speed increases

## Theory of Machine Creep in belt drive is due to

Uneven extensions and contractions due to varying tension
Material of the belt
Larger size of the driver pulley
Material of the pulley