1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

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When do you use a VFD motor?

1 Answers  

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Dear Sir, I willing to know if one 15Hp induction motor run in star connection. What happen power capacity of motor? Plz tell me.

1 Answers   Amtek Tekfor Automotive,

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what is the rating of a power transformer?

1 Answers   ACME,

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Why water bubbles when D.C. Current is passed through it? Why not when A.C. Current is passed?

0 Answers  

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what is RCBO?

1 Answers  

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what is the difference b/w conductor and semicoductor

1 Answers  

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In the diesel generator wihch type of power we can get it ? Like AC / DC

2 Answers   Aditya Birla, Indian Steel, PTPS,

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how megger step up the DC voltage

1 Answers   Voltech,

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1.what type of wave is produced from i.online ups ii.offline ups iii.inverter.why don't we use inverter instant of offline ups for computer,what's the reason?

2 Answers  

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A heater capacity is 3.0 KW on 415V . if supply voltage is 380Volt . what is heater capacity on 380volt . and how calculate and give formulas . Prakash veer singh Roto power Engg.

5 Answers  

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How Kneepoint voltage of CT practically related when CT in service. ie Knp is above 670 what exactly means

0 Answers   ABC,

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