## Theory of Machine The frictional torque transmitted by a disc or plate clutch is same as that of

Conical pivot bearing
Truncated conical pivot bearing
Flat collar bearing
Flat pivot bearing

360°
180°
90°

θ/2
θ

## Theory of Machine In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done

Because the uniform velocity motion is a partial parabolic motion
In order to have acceleration in beginning and retardation at the end of stroke within the finite limits
Because of difficulty in manufacturing cam profile
Because of loose contact of follower with cam surface

## Theory of Machine Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

π (r₁ + r₂) + (r₁ - r₂)²/x + 2x
π (r₁ - r₂) + (r₁ - r₂)²/x + 2x
π (r₁ - r₂) + (r₁ + r₂)²/x + 2x
π (r₁ + r₂) + (r₁ + r₂)²/x + 2x

## Theory of Machine The mechanism in which two are turning pairs and two are sliding pairs, is called a

All of these
Scotch yoke mechanism
Double slider crank chain
Elliptical trammel