Question

The disadvantages of the V-belt drive over flat belt drive are

(a) Since the V-belts are subjected to certain amount of creep, therefore these are not suitable for constant speed application such as synchronous machines, and timing devices.

(b) The belt life is greatly influenced with temperature changes, improper belt tension and mismatching of belt lengths.

(c) The centrifugal tension prevents the use of V-belts at speeds below 5 m/s and above 50m/s.

(d) all of the mentioned

The question was posed to me in an online interview.

This question is from Advantages and Disadvantages of Chain Drive Over Belt or Rope Drive topic in portion Belt, Rope and Chain Drives of Machine Kinematics

Answer 1

The correct option is (d) all of the mentioned

The best I can explain: Following are the disadvantages of the V-belt drive over flat belt drive :

a) The V-belt drive cannot be used with large centre distances.

b) The V-belts are not so durable as flat belts.

c) The construction of pulleys for V-belts is more complicated than pulleys for flat belts.

d) Since the V-belts are subjected to certain amount of creep, therefore these are not suitable for constant speed application such as synchronous machines, and timing devices.

e) The belt life is greatly influenced with temperature changes, improper belt tension and mismatching of belt lengths.

f) The centrifugal tension prevents the use of V-belts at speeds below 5 m/s and above 50m/s.