why do we prefer VCB over OCB? what are the advantages of Vaccum Ckt. Breaker over Oil Ckt. Breaker?

2 Answers  

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Why the ceiling fan has three blades, why not two,four or five?

4 Answers  

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During regenerative breaking= A rotating magnetic field is reversed B slip is positive C torque is positive D slip is negative

0 Answers   Core Solutions,

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what's transient & sub- transient reactance means?

2 Answers  

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IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

0 Answers  

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why dc source used for HV breakers and Relays operation?

2 Answers   Cethar,

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how to define that what is resister ,capacitor& inductor.

1 Answers  

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what is different between IP55,IP54 and IP66?

2 Answers   ABB, Global Industries,

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where HT & LT capacitor uses ?

2 Answers   NTPC,

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Explain how you intend to work under pressure to meet up with deadline target?

0 Answers  

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What is difference between MCB,MCCB,ELCB and RCCB? Brief description and why RCCB is costly?

3 Answers   JLL,

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is IS says that neutral should be brought to switch box. and this one is a recomended practice

0 Answers   Sterling Wilson,

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