Answer / vijay kumar

P=V * I * power factor
If p.f =1

P=V * I

Power factor means phase angle between voltage &
Current.Angle varies between 0 to 360 degree.The value of
cosine in any quadrant cannot be more than 1.so power
factor is maintained one to get maximum power.

Answer / shyamkr

we know the expression for power factor is cosine of phase
angle between voltage n current is R/Z.
SINCE r never become greater than z since r=sqrt(r2+x2)
so it varies frm 0 to 1.

Answer / jain c

power factor is the cosine of angle between voltage and
current. the range of value of cos lies between -1 to 1. So
there is no chance to become power factor as 2,3,4 etc.

Answer / bala.a

Power factor = consumed power ( Kw )/ Apparent power (KVA )

SO IT IS NOT POSSIBLE TO 2,3.4

Answer / vijaya kumar.m

Power factor means Cosine angle between Voltage and Current
so cosine rang is in between -1 to +1 so power factor unity
means one(1)
For only inductive load current lags voltage behind 90deg
For only capacitve load voltage lag current behind 90deg
For only Resistive load current and voltage both are same
phase

Answer / nimmi

It is often desirable to adjust the power factor of a
system to near 1.0. This power factor correction (PFC) is
achieved by switching in or out banks of inductors or
capacitors.that is the reason the power factor is always
maintained at 1.0 and called as unity power factor.

How to do maintenance of transformer feeder.

0 Answers   KSEB, L&T, Siemens,

What is Exitation voltage and Exitation current? What is the function of these in Alternator?

2 Answers   TC, Tisco,

what do you mean by 1 ton in AC`s

36 Answers   Bhel, Bosch, ITC Infotech,

what is distribution board?

0 Answers  

how current flows in circuit?

11 Answers  

which fault current is maximum: 3 phase short circuit, LG, LL or LLG?? why?? in one of the problems that i have solved, 3 phase short circuit current on an unloaded generator came out to be less than the LG fault current. can anybody please explain why.

2 Answers   Bhel,

How can we measure earthing resistance test (Earth meggar) of Transformer neutral pit while in live condition?.

0 Answers  

what are the basic insulation levels & what its Unit

0 Answers  

In Railway,why we are used HT Line 25KV ?.why we are not used 11KV,33KV and others for This?

37 Answers   Airtel, BSNL, RRB,

What is maximum AC & DC transmission voltage in India? and where?

12 Answers  

why we used capacitor in induction motor?

4 Answers   Mitsubishi,

When charging a 20 MVA , 33kV/6.6kV transformer through regulated (0-6.6 kV or 0-33 kV) source on no load , what will be the maximum current drawn by transformer from source and what sould be the source capacity.

5 Answers   TATA,