Answer / shalini.b

Power factor is the cosine of angle between voltage &
current.i.e cos(phi)
or
It is the ratio of Active power to reactive power
cos(phi)=KW/KVA

Answer / suhas yeole

it is the ratio of active power to the apperent
power,i.e. cos(Q)=kw/kva

Answer / bijay

To Chetan,
Suppose u got 80 out 0f 100 in an exam.
this means u r at a pf of 0.8, the class topper got 95, so
his PF is 0.95.

Now note that KVA is ur total marks(100)
and KW is what u scored.

now its simple pf=kw/kva

Answer / sudheer

Mr.bijay you are good explainer.
please share this knowledge to every-body.

Answer / mehdi

In the above:

cos(phi)=PF= KW/KVA formula is correct.

but KVA is apparent power not reactive power.

KVA= V*I ,
KW=V*I*cos(phi) ,
KVAR= V*I*sin(phi)

KVA=apparent power=Sqrt(KW*KW + KVAR*KVAR)

Answer / anusree

Efficiency of utilisation of a power supply, higher the pf
better is the efficiency, pf is the ratio of active power
to reactive power

Describe the control mechanism of missile launcher???

0 Answers   DRDO, ONGC,

in a refinery one motor is suddenly stoped. what will do how can i findout the problem explain step by step

2 Answers  

What do you mean by cogeneration? What its working principle?

0 Answers  

In a Dyn11 transformer, how are the 3 windings of the delta connected? Assume that R1-R2, Y1-Y2, B1-B2 are the 3 windings on the HV side.

3 Answers  

how we can calculate power factor in single phase & three phase ?thank u

0 Answers  

Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

0 Answers   TATA,

How we do the maintenance of Servo motor, even we cant open it?

0 Answers   ITC Infotech,

what is preventive maintenance? and what is predictive maintenance? and what diffrence both?

3 Answers   Volkswagen,

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?

0 Answers  

how to calculate the conductor size for certain KV transmission line and distribution line?

0 Answers   Hyundai,

what is efficient load of transformer in percentage

4 Answers  

Please give me a ansver for why currant transforme noe point should erthing

1 Answers