## Theory of Machine When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

Average tension of the tight side and slack side of the belt
Tension in the slack side of the belt
Tension in the tight side of the belt
Sum of the tensions on the tight side and slack side of the belt

None of these
Halved
Doubled

## Theory of Machine The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

ω². (r₁ r₂). (1 - cos² θ)
ω². (r₁ - r₂). (1 - sin² θ)
ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]
ω². (r₁ + r₂). (1 + cos² θ)

6π Hz
3π Hz
3 Hz
6 Hz

## Theory of Machine The dynamic friction is the friction experienced by a body, when the body

Just begins to slide over the surface of the other body
Is at rest
Is in motion
None of these

## Theory of Machine The Coriolis component of acceleration acts

Parallel to the sliding surface
Perpendicular to the sliding surface
Along the sliding surface
At 45° to the sliding surface