Answer / vidya

power factor:>it is the ratio beteween active/real power to
apparent power.
mathmatically power
factor=
VICOS@/VI.

Answer / sri krishna

aktually power factor is the ratio of apparant power and
aktual power flow in the cirkuit.

i.e. cos # = kva/kw

in kommon wrds.. power factor is the amount of power
konsumed in the unit power supplied.
always power factor should be high.
as high as the power factor, the efficiency vl b high


for any douts or diskussions kontakt me on
srikrishna_2020@yahoo.com
or vizit http://myelektricity.blogspot.com/

Answer / su

power factor is the cosine of the angle between voltage
phasor and current phasor.

Answer / dj

Power factor is define as degree to which a load is matches with the pure resistive load.

COS#= Real Power(watt)/Apparent Power(VA)

Apparent power (VI) is the power when we assumed that load is pure resistive

While Real power is that power our actual load receive.
We just comparing our load true load with pure resistive load.
i.e when unity means our load is equal to resistive load.

Answer / pillay

grow up and google for your answer you can learn more than
bits and pieces.

Answer / raghu

power factor = true power(kw)/apparent power(VI)

why slipring motor , at full speed run as squirrel cage motor?

1 Answers  

what is the calculation of power factor?

4 Answers   GATE,

Why P.f. of the system decreases when it is connectect across induction motor? & how to maintain the p.f. of system to unity.?

6 Answers   Reliance,

How many types are using in 220kv/400 kv swith yard

0 Answers  

Q-1 what are the structural and operational difference between a distribution and a power transformer? Q-2 what is skew in motors? Q-3 draw equivalent circuit of transformer Q-4 explain with phasors how pf is improved with loading in induction motors Q-5 DIFFERENT METHODS OF CABLE LAYING(interviewer asked if i heard new chemical based earthing system next) Q-6 pi model of medium length trans line Q-7 v/f control?why Q-8 vacuum circuit breaker operates in?

1 Answers   Vijai Electricals,

in conventional fan regulators how the current varies with speed?

0 Answers  

how can we change the rotating direction of single phase AC induction motors?

12 Answers   Heubach Colour, L&T, MNM Jain Engineering College,

What is the name of transformer oil?

18 Answers  

What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.

0 Answers  

i seen a 132kv/11kv transformer,and thier is a sugar factorys 10MW EXPORT PLANT,MY QUESTION IS THAT WHEN THEY EXPORT ELECTRICITY THEY USE THE SAME TRANSFORMER AND THE CONNECT IT TO 132/11KV TRANSFORMERS SECONDARY SIDE CAN ANY ONE EXPLAIN IT.. THE TRANSFORMER IS OF KIRLOSKAR MAKE AND IT HAS TAP CHANGER.

1 Answers  

why DG,Transformer,UPS capacity will be tell in KVA but not in KW?

4 Answers   Godrej,

give single line diagram of D.O.L and star -Delta starter ?

8 Answers   ABS, Al-Shuaah, Alkali Metals, Cabin Crew, Cognizant, CRI, Gwalior Distilleries, Hotels, Logicon Engineers, Max India, Nicomet, Radisson Blu, RK Company, Siemens, SLCM, Solar, Steel Strips Wheels, Sugar Factory, TATA, TCS,