An idler
pulley is used :
एक आइडलर चरखी का उपयोग किया जाता है:
For frequency
stoppage of motion
To maintain
requisite tension in the belt
To change the
direction of motion of the belt
To run only during non-load periods
To maintain
requisite tension in the belt
●An idler pulley is used to maintain requisite tension in the belt.
●It also
guide a flat belt in various manners, but do not contribute to power
transmission.
Hence the
correct option is (B).
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