## Theory of Machine A single degree of freedom system is given by, m × (d²x/dt²) + c × (dx/dt) + sx = F.cosω.t with usual notations. It represents

Free vibration with damping
Forced vibration without damping
Free vibration without damping
Forced vibration with damping

## Theory of Machine It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by

Flexible coupling
Knuckle joint
Oldham's coupling
Universal joint

2E²CS
EC S/2
2ECS
2ECS²

## Theory of Machine Angle of ascent of cam is defined as the angle

During which the follower returns to its initial position
Of rotation of the cam for a definite displacement of the follower
Through which the cam rotates during the period in which the follower remains in highest position
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position

## Theory of Machine In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then

Crossed belt drive is recommended
Open belt drive is recommended
The drive is recommended depending upon the torque transmitted
Both open belt drive and crossed belt drive is recommended

## Theory of Machine In a multiple V-belt drive, if one of the belts is broken, then we should replace

None of these
All the belts
The broken belt only
The broken belt and the belts on either side of it