Friday, 13 November 2015

Difference between Speed and Torque...?????

Speed is the measure of how far something travels in a given period of time. It is also known as the rate of change in position.

For a Motor , Speed is measured in revolutions per minute (RPM ).

Torque is force exerted as an object rotates.To turn , a motor shaft requires certain amount of torque.

If some load is added to the shaft , more torque is required to turn it.

Two motors of different sizes may run at the same speed.

A Shaded pole motor ( example ;- window fan ) exerts very little torque.Its common speed is 1200 to 1800 RPM.

Whereas a large Industrial motor (example ;- factory conveyor belt ) may exert a very high torque in order to start a heavy load , and yet it turns at a similar speed.

The same is true for engines. An Eight cylinder car engine can run at 3600 RPM and exert a great amount of torque.

A small generator will run at 3600 RPM , but not exert nearly as much torque as the car.


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