what happened if power factor is "1"
Answers were Sorted based on User's Feedback
Answer / roshan
pf=1
cos fi=1
fi=0
no reactive power
actual power=real power
Is This Answer Correct ? | 25 Yes | 1 No |
Answer / jai prakash narain singh
WHEN POWER FACTOR IS UNITY,REAL POWER BECOMES EQUAL TO
APPARENT POWER,IT MEANS KW =KVA
IN THIS CASE REACTIVE POWER IS ZERO,SO NO USELESS
WATTAGE,SAY NO LOSSES.
Is This Answer Correct ? | 10 Yes | 1 No |
Answer / naresh
there will be no presence of reactive power ,as phase angle
is 90.reactive power losses can be ignored.
Is This Answer Correct ? | 14 Yes | 6 No |
We know
Kw=kva x cos fi
When cos fi is 1
Kw=kva
active power=apprent power
Is This Answer Correct ? | 6 Yes | 1 No |
Answer / iamdon
If power factor became 1 then no reactive power is
required for load.
It means generating source would have to supply only real
power requirement of load.So less rated generator can be
used for feeding such load.
Also due to zero flow of reactive power,sending end voltage
is equal to receiving end(load)voltage.That is there will
no any voltage drop at the load end.
In such cases line loss is only due to real power
flow,which was otherwise(In case of non unity power factor)
due to flow of both real and reactive powers.Naturally
there will be reduced(non zero) line losses in case of
unity power factor.
Is This Answer Correct ? | 3 Yes | 1 No |
Answer / bhavik sabva
we know that
kw=kva * cos fi
but, if pover fector becomes unity then
fi becomes zero.
so kw=kva
it means that
in circuit there is no any loss of reactiv power.(kvar)
it becomes pureiy resistive circuit
and it is possible giving asupply of dc
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ravindra
pf =1 resistive . but for power delvring p=v1*v2sin(q)/x .x
inductance requir, .as pf from lagg to start leading by any
how or means voltage profile started impoving but the power
angle at unity pf becomes 45 to 75 but the permissible value
of q angle is 0 to 15 degree.so for the stability point of
view pf near about 1 but not exact 1 remain
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / avinash gupta
As we know.....
pf is angle between voltage and current...so if its value is 1 means...active power= vicosfi..if cosfi=1
cosfi=cos0..then fi=o....active power=vi
reactive pwer=visinfi so reactive power=0..thier is no losss of absobtion of power in reactive mode..so its purely resistive circuit....
powe factor must be 1 for neglecting loss...we have to make pf as close as 1 by diffrent capicitor using method incresing xc...
Is This Answer Correct ? | 1 Yes | 0 No |
What are the different protection systems takes place on control panel board?
how to decide the load on secondary of the tranformer
how to distinguish between ac motor and dc motor without seeing name plate of it.only seeing its getup look
how works inductive &capacitive sensors?
Mention how NPN and PNP transistor works?
why we still use sinusoidal waveforms for transmission and utilisation (we know generation is sinusoidal), instead of other ac waveforms such as triangle, sawtooth, square etc.,? is there any mathematical derivations to prove sinusoidal is efficient than others?
How to decide cable tray size?
What happened when we give 2 phase supply to a 1 phase equimpent. It's effect on equipment's efficiency and life?
i have three phase 25kva transformer but there is two phase line how can i connect to the two phase line?
If we want the fan to consume less electricity at low speed, what do we have to do?
What is Star Delta Connection, where it is applied & what for it is used
4 Answers Premium Transmission,
plz tell me in my que,how to connect thw electrical wirening in house?