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Theory of Machine

Theory of Machine
Which of the following mechanism is obtained from lower pair?

Pantograph
Gyroscope
Valve and valve gears
All of these

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is _________ as compared to uniform wear.

None of the listed here
Same
Less
More

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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)
2.E.CS
All of these
I.ω².CS

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Theory of Machine
Klein's construction gives a graphic construction for

Slider-crank mechanism
Velocity polygon
Four bar chain mechanism
Acceleration polygon

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Theory of Machine
When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the ________ pulley must be taken into consideration.

Smaller
Smaller OR Larger
Larger
None of the listed here

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Theory of Machine
The danger of breakage and vibration is maximum

Above the critical speed
Below the critical speed
Near the critical speed
None of these

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