Theory of Machine
The height of a Watt's governor is

Directly proportional to speed
Directly proportional to (speed)²
Inversely proportional to speed
Inversely proportional to (speed)²

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Theory of Machine
Oldham's coupling is the

Third inversion of slider crank chain
Second inversion of single slider crank chain
Second inversion of double slider crank chain
Third inversion of double slider crank chain

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The total acceleration of B with respect to A will be equal to

Vector sum of tangential component and Coriolis component
Vector sum of radial component and Coriolis component
Vector difference of radial component and tangential component
Vector sum of radial component and tangential component

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Theory of Machine
Two heavy rotating masses are connected by shafts of lengths l₁, l₂ and l₃ and the corresponding diameters are d₁, d₂ and d₃. This system is reduced to a torsionally equivalent system having uniform diameter d = d₁ of the shaft. The equivalent length of the shaft is

(l₁ + l₂ + l₃)/3
l₁ + l₂ + l₃
l = l₁ + l₂.(d₁/d₂)³ + l₂.(d₁/d₃)³
l = l₁ + l₂.(d₁/d₂)⁴ + l₃.(d₁/d₃)⁴

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