Answer / badshah

Decrease in Power Factor, increases the Current flow
throught the circuit, which in turn cause more Cu.losses
(I^2*R) & Voltage Drop (I*R). It affects the supplier very
much, costing more power loss & Poor Voltage Regulation. It
also increase the Consumption cost more for the consumer.

Answer / thowsif

In a AC Ckts, P=V*I*Pf(Single Phase)

i.e, Voltage= P/I*Pf

As the Pf incereases the Voltage will Decrease.

Answer / balla

P=V*I*P.F
P.F=P/S
S=V*I
where P is power in KW and S is appearant power in KVA,
when V change while P remain the same it will decrease the
cureent and vice versa, so there is no affect on P.F , the
real affect on P.F is when there is change on power demand
either real or reactive.
If the voltage change can affect P.F why we dont use this
philosophy on P.F correction !.

Answer / rajsekhar mahapatro

power factor is depended on load but not on voltages or currents. So my dear engineers irrespective of the changes in voltages or currents and there is no change in load the power factor does not change it remains the same

Answer / maiden

PF = P/S
where P is True power in W and S is apparent power in VA. We
know that P = VI*cos(Phi) and S = VI so PF = VI*cos(Phi)/VI
It can be clearly seen that a change in voltage would affect
equally the P and S canceling any effect. What affects the
PF is the phase relationship between the voltage and the
current.

Answer / srinivas

power factor defined as the cosine value of the angle between voltage and current(cos@),it is not change with voltage,thats why there is no effect on power factor.

Answer / ranga

depend on load

Answer / eeaadil

When the pf is lagging the Voltage tends to be low and
opposite is the case for leading pf

Answer / sultan

as power factor increase the real power consumed increases and the reactive power decreases so the voltage decreases. we install the capacitor to increase the voltage but due to this capacitor there is capacitive reactance which leads to increase reactive power and decrease the real power. Ingeneral pf and voltages are inverse relation

Answer / pasha

p.f decreases

IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

0 Answers  

i) in which cases should we go for neutral and where should we go for ground? ii) in domestic supply we are getting 230v a.c.and what is the amount of current?

2 Answers  

why do we use magnetic contactors ?circuit breakers are not enough?

5 Answers  

What should be distance required in between two phase of HT cionductors in open area??????

3 Answers  

what is resistor

9 Answers  

How to select the ratio of neutral ct? Is there any relation in between percentage impedance and neutral ct ratio ?

1 Answers  

how capacitor active and reactive.

1 Answers   Birla,

can wind-turbine effect on rain or on cloud's

1 Answers  

What is the difference between body earthing and neutral earthing?

2 Answers  

what is the role of MPU in DG set

1 Answers   Weltech Engineering,

how many mega ohms insullation of the cable can't be use when testing with megger tester for Low voltage cable 240V use?

3 Answers  

What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

0 Answers