Theory of Machine
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be

Isochronous
Less sensitive
More sensitive
Unaffected of sensitivity

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Theory of Machine
Which of the following statement is correct for involute gears?

The pressure angle is constant throughout the teeth engagement.
The variation in centre distance of shafts increases radial force.
A convex flank is always in contact with concave flank.
The interference is inherently absent.

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