Explain Power factor in simple words

1 Answers   ETO,

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The DC current waveform is - . What about the fire alarm waveform?

1 Answers  

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circuit breaker work alone during fault condition or need any relays ?

4 Answers  

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string efficient is 100% what is the voltage across the each disk?

1 Answers  

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what is the workimg of ct &pt?

5 Answers  

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Dear all i want to know FEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me shibin_75@yahoo.com

1 Answers   FEWA,

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Why Humming noise originated in Starter motor and how it was generated ?

3 Answers  

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how much amps can i connect for 4core 120mm armade cable

2 Answers  

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directional over current relay when acted & how it works

3 Answers   NCC, ThyssenKrupp,

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what is residual current....

1 Answers  

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( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capacitor current would be kvar x 1000 / (415 x sqrt3). This would be 70a approx. The MCCB selected should have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So you should choose at least 100 A mccb.) regarding to this answer,i would like to know why the current have to times 1.4 to get the right amphere for the mccb.hows the formula to get the 1.4??tq

2 Answers  

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What is the meaning of CT 40/5, 100/5 or in HT lines 100/1 ????????

3 Answers   Amex,

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