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Theory of Machine

Theory of Machine
The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

ω × 2π
π/ω
2π/ω
ω/2π

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Theory of Machine
A cam with a roller follower would constitute following type of pair

Higher pair
Close pair
Open pair
Lower pair

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Theory of Machine
In S.H.M., acceleration is proportional to

Velocity
Rate of change of velocity
All of these
Displacement

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The radial component of the acceleration of B with respect to A, is (where vBA = Linear velocity of B with respect to A)

vBA /AB
v²BA /AB
vBA × AB
v²BA

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Theory of Machine
The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as

Structure
Machine
Compound mechanism
Inversion

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Theory of Machine
An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

600°K
625°K
650°K
700°K

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