Why we use cosine angle for calculating power factor not in
sine angle ?
Answer Posted / prof.kingstan
See its because when there is no power lag, that is when the phase shift is 0 your other parameters shouldn't affect by the cos (phi). So when Phi=0 then cos (phi)=1. Therefore its much convenient to choose cosine rather than sine angles.
| Is This Answer Correct ? | 12 Yes | 2 No |
Post New Answer View All Answers
Show the schematic arrangement of diesel power station layout and give its principle of operation.
Capacitor is load free component but why ampere meter shows current when capacitor bank breaker close?
redundant connection in contactor?
Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?
what is load vs Torque curve & why it is used?
what is meant by carrier aided trip protection in transmission line
There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.
we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan
how to choose cable size with respect to load? how to convert cable size in mm2 to sq.mm?
What is the real function of reverse power relay in generator panel while syncronising?
What is stepper motor?
What is the difference between solid grounding and impedance grounding?
If there is major % of Voltage harmonics in the system, how can it be control or reduced?
What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)
What if the difference beween internal and exrteranal LBB?