Answer / k.prakashchandra

Regular 3 phase windings for both stator and rotor.I don't
think heating element is provided .A low voltage is applied
to windings with help of a transformer so that a current
equal to or less than full load current is circulated to
warm up the windings .The voltage and capacity of this tr
depends on the rating of the motor.As the stator is normally
delta wound, one coil gets the full voltage and other two
50% each.As you press the start button ,the transformer gets
disconnected or you can switch it off beforehand.

what happens to current , when voltage drops .?

11 Answers  

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what are corona losses

3 Answers   Siemens,

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WHAT IS MODULATION AND NEED FOR MODULATION ?

1 Answers  

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WHAT WILL HAPPEN IF WE START A MOTOR WITH STAR & IT IS RUNNING WITH STAR CONNECTION INSTEAD OF DELTA

3 Answers  

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Which type of losses in transmission Line

2 Answers  

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Why the transformers are rated in KVA ? in new view

3 Answers  

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WHAT IS DIFFRENCES DCS & PLC

1 Answers   Essar,

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why we decide alternating wave form in ac system and not in dc system

2 Answers   GMR,

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what is under coal gassification?

0 Answers  

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We are getting supply at33kvand it stepdown to 11kv.So Our requirement is 11kv voltage.why we draw 33kv from the grid instead of 11kv?

2 Answers   Birla,

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In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

0 Answers  

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why contactors are used ...? is contactors and relays are same ...?

5 Answers  

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