why some time Railway Fan not Rotate,But after a small rotation by human then i

why some time Railway Fan not Rotate,But after a small
rotation by human then it rotate normally? Why?

Question Posted / asmoorthi2000

4 Answers
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why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? W..

Answer / s c budhiraja

because starting torque requirement of fan is more than the
motor can supply.when we push the fan by hand the torque
requirement for running the fan is supplied by the fan
motor.

Is This Answer Correct ?

6 Yes

0 No

why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? W..

Answer / jay krishna

It is occurred by magnetic locking

Is This Answer Correct ?

0 Yes

0 No

why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? W..

Answer / tomboi

Is because of the accumulated dirt inside the fan shaft.
Clean it and apply some oil lubricant on the shafts an it
would rotate again as normally as how it was before when it
was clean.

Is This Answer Correct ?

2 Yes

7 No

why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? W..

Answer / mohit midha

Coz Railway fan runs through Dc
So There is no capacitor in that so that if there is any
jam by some mean then we can can rotate slightly manual.

Is This Answer Correct ?

1 Yes

12 No

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