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Period THREE:
- (a) Advantages of belt drives.
- (b) Disadvantages of belt drives.
- (c) Advantages of chain drives.
- (d) Disadvantages of chain drives.
ADVANTAGES/MERITS OF BELT DRIVES.
(1) Used to transmit power at other/inclined angles.
(2) They are easy to fix/design at any time.
(3) Used where slip is important.
(4) Friction is reduced.
(5) No lubrication is required.
(6) Used to transmit motion through a long distance.
(7) Not much heat is generated.
(8) It is not expensive.
(9) Easy to serve and repair.
Disadvantages/Demerits of belt drives.
(1) In large machines with large belt, slipping of belt can cause injury when in motion.
(2) Belt wastes useful energy due to friction.
(3) Excess heat produced due to friction in the belt can cause the belt to break.
(4) It cannot transfer a heavy load.
(5) It cannot do heavy work.
(6) Due to excess heat produced by friction, belt has to be changed after a period of time.
(7) Do not last long.
ADVANTAGES/MERITS OF CHAIN DRIVES.
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