## Theory of Machine The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

Inclined at 45°
Opposite to each other
Parallel to each other
Perpendicular to each other

## Theory of Machine An exact straight line motion mechanism is a

All of these
Hart's mechanism
Scott-Russell's mechanism
Peaucellier's mechanism

## Theory of Machine In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

Will not occur
Will change
Will remain same
Could change or remain unaltered depending on which link is fixed

(S₁ - S₂) / 2h
(S₁ - S₂) / h
(S₁ + S₂) / h
(S₁ + S₂) / 2h

## Theory of Machine In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Zero
Equal to unity
Greater than unity
Less than unity