what is mean by power factor

Answer Posted / natarajanramkumar

PowerFactor of circuit may be defined as:
a.The ratio of resistance and impedance=R/Z
b.The ratio=Watts/Voltamperes=True power/Apparent
power=V*I*costheta/V*I.

Is This Answer Correct ?    4 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is Load sharing of Transformer ?

1554


How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?

1828


Different STANDARDS (BS, IS, IEC etc) gives different informations on CT specification. How they correspons w r t each other (i.e I mean to say BS provides "knee point voltage" but IS does not, then how can i select CT)

1512


i need mat lab program to find out the transmission line losses,regulation and losses

1446


how many single tension hardware are required on a double circuit transmission tower?

1483






which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

1571


What is mean by STUB protection?

1582


How to work definite,over pluxing,revers power,OSR relay

1252


Which type of transformer is used for lighting loads?

716


If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1468


Is there any guideline say about display of earthing value near to earth pit

712


A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.

2455


sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.

2491


This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?

1583


What is dynamo function in DG sets and draw block diagram?

1591