A 1.5 kW motor is running at 1440 rev/min. It is to be connected

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A 1.5 kW motor is running at 1440 rev/min. It is to be connected to a stirrer running at 36 rev/ min. The gearing arrangement suitable for this application is

1. differential gear
2. helical gear
3. spur gear
4. worm gear

Correct Option: D

Power of motor = 1.5 kW
N = 1440 rev/min
Speed of stirrer = 36 rev/min

S.R.D =	1440	= 40
	36

∴ Worm gear is used.