Answer / gopal manda

active power means wattless power,which is not consume,but
it creat magnetic and electrostatic field,it creat in
inductor & capacitor.

Answer / bpr

reactive power is represented as KVAR.
reactive power=VI SIN PHI

Answer / goutam

reactive power is a component of active power which is watt
less it is not receive or sent by the electrical
equipment.this power only circulate in the circuit.

Answer / guest

VIsin@

Answer / kanchana

reactive power is VI SINphy

why the supply power frequency is 50hz in india? where as it is 60hz in US?

4 Answers  

working principles of a generator

3 Answers   Cairn,

What is the purpose of SSVW, IOVW, DVDF Tests in transformer? Those who are answering, pls send mail ids also.

1 Answers  

Why all transmission lines are AC, not DC line?

4 Answers  

if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.

2 Answers   Jakson,

The height to which the liquid in a tank to be maintained for a certain constant velocity?

0 Answers  

The mechanical angle is electrical angle A always less than B greater than or equal to C equal to D less than or eaual to

1 Answers  

advantage,disadvantage,aplication of sensorless direct torque control of induction motor

0 Answers  

We say that if voltage in a power system is increased,for a constant power the current will decrease (by P=VI). isn't this in disagreement with the ohms law(I propotional V;resistant const.).Since the resistance of transmission lines remains constant,shouldn't inc in voltage cause inc in current across the transmission line? I have read many articles across the net but still couldn't this figure this out. :( Guyz plz assist me with dis..:)..

4 Answers  

Consider a case that two 200 hp motors are connected to 500KVA transformer. For improving power factor can we add capacitors in common bus bars to motors. Or should we add capacitors for each individual motor?

2 Answers  

How to calculate per unit impedance of transformer?

0 Answers  

What is current divider rule (cdr)?

0 Answers