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.

what is the different between earth leakage relay and earth fault relay?

5 Answers   ME,

What are the tests to be conducted in the electrical installations

1 Answers  

What transistor level design tools are you proficient with? What types of designs were they used on?

1 Answers   Intel, Jindal,

how technical is calculated in 11kv line and lt line

0 Answers  

tell me working of air circuit braker.

2 Answers  

Please mention any books for electrical design load calculation for industrial,commercial(to select cable,breaker,bus bar,stator,)

1 Answers   C&S,

why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.

0 Answers   HAL,

what is the different between counterpoise earthing and pipe earthing?

1 Answers  

how df/dt relay operates & how it works?

1 Answers  

area control error

0 Answers  

What is triac?

3 Answers   NTPC,

How induction stove works?

1 Answers