Answer Posted / be1
KVA=S , so you should know that S=Rt.(R^2+Q^2)
S=P*pf ---- (pf means power factor)
S=U*I*pf but in 3 phases you have
S=Rt.3*U*I*pf
| Is This Answer Correct ? | 1 Yes | 3 No |
Post New Answer View All Answers
How we calculate the current carrying capacity of H.T. cabel?
What is the difference between electronic regulator and ordinary rheostat regulator for fans?
how braking & making capacity of circuit breaker is calculated?
What is meaning of out of phase (making & breaking) capacity And how to calculate
What is the formula for calculating impedance of transformers connected parallel at fault level 50KA?
define displacement & magnitude ?
Define corner frequency?
L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.
Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.
what about the power of wattmeter at starting and loding?
for compensate 315mh inductance ,how many capaciance required?
What will happen if we introduce negative feedback to a control system that uses a positive feedback?
why starting current is high and resistance is almost 0 during the starting of motor dc motor...?
How to protect sensitive loads such as Dosing pumps inside a factory from voltage surge/voltage fluctuation.
if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?