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.

what are the major difference between 3phase 3wire and 3phase 4wire trivector meter?

2 Answers   L&T, NTPC,

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5 Answers  

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2 Answers  

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Why Human body feel Electric shock ?? n in an Electric train during running , We didnt feel any Shock ? why

13 Answers   Lovely Professional University, NTPC,

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what is the reason for connecting hvdc monopolar line with negative conductors

0 Answers  

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in alternator what is use of AVR ? how AVR is operating either AC or DC?

1 Answers  

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What is the gain of 1-s/1=s at 1 rad/sec?

3 Answers   NPCIL,

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2 Answers  

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state the functions of different parts of star delta starter.

1 Answers  

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When measuring the Insulation resistance of a motor winding (winding to earth) using a megger meter, Applied voltage(1000V) was automatically reduced to 500V. and the measured insulation resistance values are also very low (in Kohm range) Can anyone give me a reason???

3 Answers  

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why the indian frequency is 50 hz & U.S.Frequency of 60 hz

3 Answers  

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What is the function of pulse transformer?

4 Answers   Electrotherm,

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