Answer / pillay

drives are usually the motor that drives the machine. if the
motor is DC operated than it is a dc drive like wise if the
motor is AC than it is a AC drive.For ac motors vfds are
commonly used for speed control.

why we are giving D.C. supply to field of an alternator, why can't we give the a.C. supply

12 Answers   APTransco, Proman,

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how will calculate the safe starting current of 3-phase squirrel cage induction motor?

0 Answers  

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I have 1500KVA transformer ,How much Maximum KW Load is allowed?

15 Answers   GKC Projects Limited GKCPL,

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difference between ac motor and dc motor

5 Answers  

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Whis machine is having higher efficiency Transformer or Generator

2 Answers  

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how much capacity(rating) of generator required to operate a load of 100kv.

6 Answers   DSC,

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How much ampere rating on LT side of distribution transformer and also on HT side of 200KVA transformer

2 Answers   ABB,

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Why AC & DC capacitor are use in UPS ??????????????????

0 Answers   Sanghi,

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For a Potential Transformer(PT), the primary neutral terminal must be grounded before energization. Why....? What will be heppend if we energize the PT without grounded the primary neutral point? Why..........?

2 Answers  

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A 100W electric lamp is supplied from a 115V, 60HZ source. The peak instantaneous power dissipated in the lamp filament is

0 Answers  

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what is meant by lagging & leading current

1 Answers   TATA,

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Define what is the function of anti-pumping in circuit breaker?

0 Answers  

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