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Theory of Machine

Theory of Machine
The relative velocity of B with respect to A in a rigid link AB is

Parallel to AB
Perpendicular to AB
Along AB
At 45° to AB

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Theory of Machine
The main disadvantage of the sliding pair is that it is

Both (A) and (B) above
Bulky
Wears rapidly
Difficult to manufacture

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Theory of Machine
The periodic time of one oscillation for a simple pendulum is

(1/2π). √(g/l)
2π. √(g/l)
(1/2π). √(l/g)
2π. √(l/g)

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Theory of Machine
In a drag link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is

There is no such relationship
Greater than sum of other two
Equal to sum of other two
Less than sum of other two

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Theory of Machine
In a radial cam, the follower moves

In a direction parallel to the cam axis
In a direction perpendicular to the cam axis
Along the cam axis
In any direction irrespective of the cam axis

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Theory of Machine
Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy, CS = Coefficient of fluctuation of speed, and ω = Mean angular speed = (ω₁ + ω₂)/2]

2.E.CS
I.ω.(ω₁ - ω₂)
I.ω².CS
All of these

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