Answer / m a gaffar

get load current I(L)

I(L)*1.25=I(MAX) maximum current

mcb specification are done on maximum current flow in circuit.

Answer / babu

rated current

Answer / sunitsaini@interview.com

time current chacteristic is also conciderd in m.c.b.

Why does the DC voltage needed is less than AC needed to produce corona?

2 Answers   TATA,

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what will happen if secondary of potential transformer (220kv/110volt) of any metering core or protection core (cables) of any phase got earthed??

1 Answers  

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Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?

9 Answers  

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What is the application of Dyn1 and Dyn11 vector group of transformer?

0 Answers  

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what s d difference between inverter an ups

1 Answers   Jindal,

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why should we place 9KV lightning arrestors in 11KV substation ?

9 Answers   DOL, ISRO, Matrix,

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how to design domestic earthing pit and earthing wiring?

1 Answers  

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Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV,20kV, 30kV?

2 Answers   Bhel,

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primary of transformer connected to Dc supply in series with switch, and secondary connected on ammeter, what happens when swith On and OFF. (or) if continuously On and OFF

9 Answers  

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what is formula for zero phase sequence of nuetal earthing transformer of 6.6 kv

0 Answers  

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If a 3 phase induction motor is in off condition in the conveyor and rotor of the motor keeps moving with the conveyor than the resistance of windings of motor varies. why is it so ??

0 Answers   Jindal,

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I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.

0 Answers  

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