Answer / prem

Earthed.because core leakage current is tan delta point so earthed

what are different type of triping equipmen like MCB,MCCB and their differences

3 Answers   ABB, Schneider, UPPCL,

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1 tr is equal to how many Kw .is there any specific formula for this to get the result .

13 Answers   Cipla, LG, NSN,

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why the star delta motors burn out frequently

1 Answers  

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How can we calculate the power factor of an electrical appliance ? Is there any formula ? Is there any meter around to calculate it ? And how to use that meter ? thanks

2 Answers   Essar, Philips,

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In power point wiring,often,we use less size of earth wire compared to phase & neutral wire and we use big size pin in pug top. how is it justified? can we use small size cable for earthing?

3 Answers   HAL,

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What is float cum boost charging system?

0 Answers  

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What is the function of Governor in Hydro Power Station? What is the Function of Lightning Arrestor Voltage Transformer (LAVT)?

0 Answers  

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meaning of two lines in between the transformer single line diagram??

3 Answers  

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I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

0 Answers  

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transformer core are laminated for what purpose?

9 Answers   NTPC,

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how to select the cables based on amps ratings ? how to calculate the amps and how to select the cable size

1 Answers   JV Electricals,

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why a diode bridge is provided in vcb control circuit ?

2 Answers  

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