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Theory of Machine

Theory of Machine
The behaviour of gases can be fully determined by

3 laws
4 laws
1 law
2 laws

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Theory of Machine
An automobile steering gear is an example of

Sliding pair
Higher pair
Lower pair
Rolling pair

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Theory of Machine
A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

8 fn
fn/2
2 fn
4 fn

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Theory of Machine
The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by (where R = Radius of flank, r₁ = Minimum radius of the cam, and θ = Angle turned through by the cam)

(R - r₁) (1 - cosθ)
R (1 - cosθ)
R (1 - sinθ)
(R - r₁) (1 - sinθ)

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Theory of Machine
The amplitude of vibration is always __________ the radius of the circle.

Greater than
None of these
Equal to
Less than

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Theory of Machine
The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

ω(R - r₁) cosθ
ωr₁ sinθ
ω(R - r₁) sinθ
ωR cosθ

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