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Doctors Medicines MCQs Q&A

  1. It touches at bottom.
  2. It touches both at bottom and sides.
  3. It touches at sides only.
  4. It could touch anywhere.
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Option 3 : It touches at sides only.

Explanation:

V-Belt Drive:

V - belt drives are generally used when the distance between the shafts is too short for flat belt drives. Owing to the wedge action between the belt and the sides of the groove in the pulley, the V belt is less likely to slip as they touched sides only, hence more power can be transmitted

The ‘V’ belts are classified into 5 groups as per IS.2494-1974 namely A, B, C, D  and E.

Advantages of V-belt Drive:

  • It is compact, so installation is possible in limited space
  • It is used when the centre distance between the drive and the driven pulleys is short
  • Less vibration and noise
  • Cushions the motor and bearing against load fluctuation
  • Easy replacement and maintenance
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