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Theory of Machine

Theory of Machine
The cam and follower is an example of

Higher pair
Sliding pair
Rolling pair
Lower pair

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Theory of Machine
Cylindrical cams can be classified as

Circular
None of these
Reciprocating
Tangent

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Theory of Machine
In under damped vibrating system, the amplitude of vibration

Increases linearly with time
Increases exponentially with time
Decreases exponentially with time
Decreases linearly with time

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

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Theory of Machine
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by

ω². (r₁ r₂). (1 - cos² θ)
ω². (r₁ - r₂). (1 - sin² θ)
ω². (r₁ + r₂). (1 + cos² θ)
ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ]

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Theory of Machine
The brake commonly used in railway trains is

Internal expanding brake
Band and block brake
Shoe brake
Band brake

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MORE MCQ ON Theory of Machine

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