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13.

In S.H.M., acceleration is proportional to

A.	velocity	B.	displacement
C.	rate of change of velocity	D.	all of the above

14.

In S.H.M., the velocity vector w.r.t. displacement vector

A.	leads by 90°	B.	lags by 90°
C.	leads by 180°	D.	are in phase

15.

Inertia force acts

A.	perpendicular to the accelerate force	B.	along the direction of accelerate force
C.	opposite to the direction of accelerate force	D.	in any direction w.r.t. accelerate force depending on the magnet two

16.

Kinematic pairs are those which have

A.	two elements held together mechanically	B.	two elements having relative motion
C.	two elements having Coroili's component	D.	minimum of two instantaneous centers

17.

The following is the inversion of slider crank chain mechanism

A.	Whit worth quick return mechanism	B.	hand pump
C.	oscillating cylinder engine	D.	all of the above

18.

The frequency of oscillation at compared to earth will be

A.	6 times more	B.	6 times less
C.	2.44 times more	D.	2.44 times,less

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