Theory of Machine
The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.

None of these
Greater than
Equal to
Less than

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Theory of Machine
In gears, interference takes place when

The tip of a tooth of a mating gear digs into the portion between base and root circles
Gear teeth are undercut
Pitch of the gears is not same
Gears do not move smoothly in the absence of lubrication

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