Answer / jainankit784

the defination of power factor is the cosine angle between
voltage and current.
but maximum cosine value is 1 and minimum is -1.
so power factor above 1 is impossible.

Answer / mehul

because power factor is the ratio between the active power
to apparent power.so it is impossible to any load get uses
more than the apparent power.from where he get the more power.

Answer / anupam

power factor is ratio of;
cos(phi)=resistance/impedance,
impedance > resistance, in a given ckt hence,
power factor<=1

Answer / pillay

power factor is said to be lagging say 0.2 to leading say o.2.Unity means it is not leading or lagging. Now pf is the angular difference between the voltage and amperes. When a voltage is applied across a resistive load the current travels along the voltage that means unity pf. when the voltage is applied across an inductor the current will flow later than the voltage this is said to be lagging pf, but when you apply across a capacitive load the current will flow faster than the voltage which means it is leading. so you will get a pf lag"g from o.o1 to 1 or lead"g o.o1 to 1(unity) So there is NO not more than 1.

Answer / lisman setiawan

POWER FACTOR is not COS PHI !!!

POWER FACTOR = only ratio Real Power(S) and Active Power(P).

COS PHI = only ratio V and I.

S=P+Q
Thats why P impossible greater than S!

Answer / er. ankush miglani 9718151073

powe factor more than unity is possible but if it is so
the ckt becomes a sorce and starts supplying powr to the
mains
it happened coz the current starts leading voltage by an
angle mopre than 90 deg. and stsrts feeding the mains.

so powerv factor cant be more than 1

How can calculate the efficency of the rectifier. input 240V AC, current 5 amps,P.F 0.98, Output is 54 V DC,62.6 A.

10 Answers  

which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?

0 Answers  

why the neutral of power transformer is always earthed?

1 Answers  

by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

0 Answers   HP,

formula for cable size calculation for current?

10 Answers   KL Power, ONGC, RL Clean Power Pvt Ltd RLCPPL, SAS, Sobha Developers,

what is the reason of current flow in nutral although load is balanced (three phase equal current)

3 Answers  

how to test generator protection rotor earth fault relay and locked rotor test?

1 Answers  

which level of transformer oil has got low dielectric strength ?why?

2 Answers  

why are installed water leakage detection system data centers & server rooms

0 Answers   Reliance,

what is carona and how is occur?

5 Answers  

What is the effect of positive feedback on the stability of the systems?

0 Answers  

Design and explain a circuit to produce an unregulated full wave D.C supply.

1 Answers