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.

Answer / jay krishna

It is occurred by magnetic locking

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.

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.

why current is constant on d.c?

0 Answers  

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how much kn lightning arrestor is used in 11kv line

8 Answers   Power Grid,

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Why is making current of CB always greater than CB breaking burrent?.

6 Answers   JP Group,

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if i have to use 14 kw what size of power cable can i use and size of earth cable also.

2 Answers  

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why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?

0 Answers   Government, PSU,

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how much current we can get from 11kv overhead line ?

8 Answers  

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What are the transformer losses?

0 Answers  

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If the earth is a good conductor of electricity, why don't people get shocked every time they walking on earth?

0 Answers   Reliance,

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why we use carbon brush in exciter&genrator?

5 Answers   ABB, SMC,

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HOW TO CALCULATE EHV CABLE SIZING?

2 Answers   L&T,

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Why the magneti fields are not passes from southpole to north pole

0 Answers   SGML,

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how much GROUND & NEUTRAL VOLT maintain in data center.

0 Answers  

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