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Theory of Machine

Theory of Machine
Which of the following is an open pair?

Cam and follower
Journal bearing
Lead screw and nut
Ball and socket joint

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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]

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

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Theory of Machine
The critical speed of a shaft depends upon its

Mass
Stiffness and eccentricity
Stiffness
Mass and stiffness

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Theory of Machine
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be

Zero
None of these
Minimum
Maximum

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Theory of Machine
Klein's construction is useful to determine

Displacement of various parts
Acceleration of various parts
Velocity of various parts
Angular acceleration of various parts

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Theory of Machine
When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a

Higher pair
Force-closed pair
Self-closed pair
Lower pair

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