Answer / manoj

p=vi
where
p=power
v=voltage
i=current

Answer / anket

For DC system  it is V*I

For AC system

P = V*I*COS0 (True power)

Q = V*I*SIN0 (Reactive power)

S = V*I (Apparant power)

Answer / ganesh bidgar

p=v*i

WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

0 Answers  

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IF we have 500kva transformer 11.0/0.415V, 50Hz. How to calculate the current on HT & LT side, how can we consider for its breaker (HT & LT both)? You are requested to solve the question herewith.

3 Answers   Bhutan Power Corporation,

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want happens when a dc is given to a commutator

2 Answers  

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How to calculate the heat load for a electrical room

0 Answers  

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when two gen set runing in parallel but thay have diffrent pole pitch, then what will be happan

0 Answers  

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what is the difference between Inverter and ups

1 Answers   L&T, MTS,

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for preparation of design note of 11 / 220 kV , 3 phase, 63 MVA transformer how can calculate or consider the iron losses and copper losses

1 Answers  

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i need to calculate high voltage line power factor daily basics but there is meter reading kwh and kvah while calculating power factor kwh/kvah formula was right. for examble there is point c=13kwh c=1.8 lag c=1.2 lead and c=14.5kvah like that i know that p.f =kwh/kvah but c=1.8lag kvarh and c=1.2lead kvarh points i dont know if u know please reply

1 Answers  

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what is the KVA formula of a three phase transformer

5 Answers  

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Why Transformer does not work in DC ?

5 Answers  

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We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected. Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT. My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT. Please guide me.

2 Answers   KPTCL,

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can we use ordinary transformer in place of autotransformer?give reasons also

1 Answers  

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