Answer / bibhu

DC power = VI
AC Power = VI X PF

Answer / mrudang

in DC POWER , the PF not comes in
in ac pf is important

Answer / ramanjaneyulu

for dc power P=V*I
ac power P=V*I*power factor

why transformer does not obey ohm law?

27 Answers  

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respected sir, sir recentely i have applied for chennai and tiruvananthapur section enggineer and juniour engg in electrical dept. but still i donot get how i have to syart my preparation and also t the same time i donot know exactly what they r going to give in the examinations i mean which sections they r going to give i donot know exactly, can u prefer whichh books i have to follow and model papers or both boards

1 Answers  

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The power dissipated by a resistor of 10ohm when a current of 2A passes through it is:(a) 0.4W(b) 20W(c) 40W(d) 200W

2 Answers  

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How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540

0 Answers  

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Instead of single phase(220), if we apply Phase to phase (R&Y)supply (eg: for lighting fixture). what will be the power formula?

1 Answers  

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what is multiplying factor of a energy meter connected with a CT ratio of 600/5 and voltage at 415 volts.

1 Answers  

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why voltage is low at reciving end in summer??

4 Answers   JSW,

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What is the basic principle of circuit breaker?.. I read that it works on electro-mechanical principle... Does it require both electric n magnetic conversion to act?

3 Answers  

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what is diffrent between plc and clc??

1 Answers  

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what is draiv work

0 Answers  

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what is surge??

1 Answers  

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Why the voltage n frequency of the incoming generator is kept slightly higher than d grid voltage n frequency while synchronization ?

4 Answers  

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