Theory of Machine
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to

Minimize the effect of primary forces
To start the locomotive quickly
Minimize the effect of secondary forces
Have perfect balancing

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Theory of Machine
Power of a governor is the

Work-done at the sleeve for maximum equilibrium speed
Mean force exerted at the sleeve for maximum equilibrium speed
Mean force exerted at the sleeve for a given percentage change of speed
None of these

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Theory of Machine
A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard?

All points of the disc have the same velocity
The centre of the disc has centrifugal acceleration
The point on the disc making contact with the plane surface has zero acceleration
The centre of the disc has zero acceleration

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