Q. The fast pulley is the pulley which has

A
Runs fast
B
Runs independently
C
A grooved pulley
D
Fitted on the shaft
Solution:

A fast pulley is mounted on the shaft with a keyed joint, whereas the loose pulley runs freely on the shaft.

For power transmission fast pulley is used, Idler pulley or loose pulley rotates freely on the mounted shaft.

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