Theory of Machine
In a turning moment diagram, the variations of energy above and below the mean resisting torque line is called

Coefficient of fluctuation of energy
Maximum fluctuation of energy
None of the listed here
Fluctuation of energy

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Theory of Machine
Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of a cross belt drive. The length of the belt is

π (r₁ + r₂) + [(r₁ + r₂)²/x] + 2x
π (r₁ - r₂) + [(r₁ + r₂)²/x] + 2x
π (r₁ - r₂) + [(r₁ - r₂)²/x] + 2x
π (r₁ + r₂) + [(r₁ - r₂)²/x] + 2x

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