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Theory of Machine

Theory of Machine
The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.

Minimum
Maximum
Zero
None of these

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Theory of Machine
The Ackermann steering mechanism is preferred to the Davis type in automobiles because

The former is most rigid
The former is having turning pair
The former is mathematically accurate
The former is most economical

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Theory of Machine
The primary unbalanced force is maximum _________ in one revolution of the crank.

Sixteen times
Four times
Eight times
Twice

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Theory of Machine
According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on A. A triangle

A triangle
A straight line
A point
Two lines

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Theory of Machine
The natural frequency of free longitudinal vibrations is equal to (where m = Mass of the body, s = Stiffness of the body, and δ = Static deflection of the body)

1/2π × √(g/δ)
Any one of the listed here
0.4985/√δ
1/2π × √(s/m)

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Theory of Machine
Oldham’s coupling is an inversion of the kinematic chain used in

Elliptical trammels
Whitworth quick return mechanism
Rotary engine
Universal joint

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