Answer Posted / mani777
pf is cosine (cos theeta) between voltage and current
pf= real power or reactive power/apperent power
pf=kva/v*i
| Is This Answer Correct ? | 4 Yes | 2 No |
Post New Answer View All Answers
How to select a cable size for particular load?
explain why core loss of a transformer is almost constant under different load conditions when connected across a constant voltage and constant frequency.
Is it required to lay 2 runs of GI wires along with armoured cables from one power DB to another Power DB?
what is the affect of earth's magnetic field on the frequency used in aircraft???
in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain
Why Stabilising Resistor used in REF circuit ?
What is ferro-resonance in electrical system? Why it occurs and what are measures to prevent it?
what is sevice settings for mccb?How can be it setted?
Draw the DOL starter and star delta starter drawing?
he compression ratio for a petrol engine generally lies between
10 tube light connect in mcb breaker.one tube light is fault.so breaker is tribe.how fault is rectified.(using 3wire phase,earth,neutral)
What is difference between mcb and mccb.
How to decide DO set rating of Transformer?
After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.
i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?