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]

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

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Theory of Machine
Which of the following is false statement in respect of differences between machine and structure?

In machines, relative motion exists between its members, whereas same does not exist in case of structures
Efficiency of machines as well as structures is below 100 %
Machines transmit mechanical work, whereas structures transmit forces
Machines modify movement and work, whereas structures modify forces

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Theory of Machine
A governor is said to be stable, if the

Radius of rotation of balls decreases as the equilibrium speed increases
Radius of rotation of balls decreases as the equilibrium speed decreases
Radius of rotation of balls increases as the equilibrium speed increases
Radius of rotation of balls increases as the equilibrium speed decreases

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Theory of Machine
In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing the angle of advance of the eccentric while the throw of the eccentric, steam lap and exhaust lap are kept constant. This method will

Reduce length of effective stroke of piston
Reduce maximum opening of port to steam
All of these
Cause withdrawing or throttling of steam

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