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Theory of machines - Engineering

Q1:

In gears, interference takes place when

A the tip of a tooth of a mating gear digs into the portion between base and root circles

B gears do not move smoothly in the absence of lubrication

C pitch of the gears is not same

D gear teeth are undercut

ANS:A - the tip of a tooth of a mating gear digs into the portion between base and root circles

Explanation: No answer description is available.