why to use freewheeling diode ( diode in revers bias mode) across dc coil

2 Answers  

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what is the difference b/w ground & virtual ground?

0 Answers   Accenture,

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11kv/0.433kv, 2 mva , transformer , for protection and metering how many CT/PT are required?

24 Answers   Bhilai,

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How do you convert the lt amps on a transformer to the ht amps?

2 Answers  

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A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.

0 Answers  

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how to calculate neutral current in three phase four wire system

1 Answers   Auto Meters,

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what is encoder & its use?

1 Answers   ACC,

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if 20 hp motor starts directly stars and contenious run . what will be the effect.

11 Answers   HP, Ohsung Electronics,

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For high voltage and low current Circuit Breaker preferred is vacuum circuit breaker.why?

1 Answers  

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How many points does a Circuit can have?

0 Answers  

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A 3 phase motor, 440 voltage, induction motor. If we take out rotor from motor and if we give supply 440 volt to stator then what happens?????

20 Answers  

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What is the difference between an ELCB and a RCD?

2 Answers   Schneider,

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