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Theory of Machine

Theory of Machine
Which of the following is a higher pair?

Turning pair
Screw pair
Belt and pulley
Sliding pair

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Theory of Machine
A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

I₂/G
I₂/G²
G².I₂
G.I₂

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Theory of Machine
According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a

Straight line
Rectangle
Parabolic curve
Triangle

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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)

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

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Theory of Machine
When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than

0.25
0.5
1
2

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Theory of Machine
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

Flexible coupling
Oldham's coupling
Universal coupling
Chain coupling

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