Answer / friend

brush motor having commutator and supply contaning or input
to the rotor by using brushes to the commutator
acc. to brush less motor having power input to the stator of
the motor

in elevator industries , how to calculate the required KVA for the elevator (elevator spec- 40A module , motor of 13.5KW, 20A)

1 Answers   DLF, Tata Steel Limited,

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what is 3rd Harmonics? how it is generated in alternator

2 Answers   Aditya Birla,

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what happend when 230v dc motor we supplied a 23v ac supply

3 Answers   Hero MotoCorp, RRB,

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IN 6.6KV 3 phase switch gear .i will give 6.6kv to R phase only to earth in during H.v testing (through H.v KIT).what happen remaining phases.how much voltage get remaining phases.why? explain.

1 Answers  

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i have a roll dia aprox.43 inches and gear box ratio is 14.3.so my question is how was decide the kw rating of motor.

1 Answers  

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What is meant by bus bar protection?

0 Answers  

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please give some hindalco placement papers for written exam

0 Answers   Hindalco,

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Why grounding is generally done in supply end?

1 Answers   ISRO, OFBL,

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what is XF 200/240 V AC for Drawout Breaker.

1 Answers  

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which pole motor is best ?4 pole motor or 6 pole motor,why?

2 Answers  

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How can i calculate heat load ?

3 Answers   DSSR, NSN,

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why should be the frequency is 50 hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50

3 Answers  

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