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Question
What is the effect if power factor is above 1 or unity.
 Question Submitted By :: Yogesh
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 1
if power factor is above 1 then the load takes lees current
than rated.
 
Is This Answer Correct ?    13 Yes 52 No
Provas
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 2
at unity power factor all active power used so it is real
power and reactive power will be zero so losses will be
zero.

but power factor never goes above unity as it is cosine of
angle between ph diff of voltage and current
and
cos0=1(unity)

(note: Provas plz can u describe)
 
Is This Answer Correct ?    54 Yes 10 No
Gajanan
[Ispat Steel Industries Ltd]
 
 
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 3
Voltage at transformer terminal increases.You can utilise
full KVA of transformer.Electricity company asks to
maintain pf near to unity to reduce the losses in
transmission as the current reduces reducing the I2R loses.
This is why we get incentive on energy charges from supply
company.
 
Is This Answer Correct ?    7 Yes 15 No
Arun
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 4
The power= Voltage*current*power factor... So when the
power factor is equal to or naer 1 the input voltage and
curret is fully utilised.. so losses..But we can't made the
Power Factor more than 1 in Practical life..
 
Is This Answer Correct ?    16 Yes 10 No
Balaji
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 5
if power factor is one means it is a resistive load no
loses due to induction it is like a dc ckt
 
Is This Answer Correct ?    6 Yes 12 No
Glen
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 6
If the power factor is unity that means the load is
resistive load and as the load with lpf wil draw high
current and load with high pf wil draw less current ,so we
have less losses and the pf can never bemore than 1 because
the cosine function varies a max. of 1.
Since load is resistive the output waveform is
purely a sinusoidal waveform without any diturbances
 
Is This Answer Correct ?    3 Yes 10 No
Anusha Reddy.m
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 7
Power = 1.734 x V x Ix cos@
Say the power factor is 1 unity.
P=1.734x400x1x1=698.2watts. This much power need to send
from Power statin to do some work. The energy meter will
read the unit as same for this value. But if the power
factor is less or more say 0.8
P-1.732x400x1x.8=554.24watts. This much watts only will
read the meter. Remaining amound send from power station
willnot in calculated and is in losses.Remaining around 150
watts loss in same work.Thats why EB insisting to maintain
unity instead of lagging or leading.
 
Is This Answer Correct ?    4 Yes 3 No
Ramesh Pachamal
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 8
at unity power factor all active power used so it is real
power and reactive power will be zero so losses will be
zero.

If power factor is above one reverse current will be
occured i.e motors will works as a generator.
 
Is This Answer Correct ?    7 Yes 8 No
Sayed
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 9
Maintaining unity power factor reduces losses in
distribution and in switchgear system not in actual power
consumption. If we maintain the power factor above 1 there
will be more losses in distribution transformers and
capacitors(which are used to increase PF). The capacitive
power reduces the inductance power in transformer thereby
increasing the losses.
 
Is This Answer Correct ?    2 Yes 5 No
Madhusudhan
 
  Re: What is the effect if power factor is above 1 or unity.
Answer
# 10
A power factor of one or "unity power factor" is the goal
of any electric utility company since if the power factor
is less than one, they have to supply more current to the
user for a given amount of power use. In so doing, they
incur more line losses. They also must have larger capacity
equipment in place than would be otherwise necessary. As a
result, an industrial facility will be charged a penalty if
its power factor is much different from 1.
 
Is This Answer Correct ?    0 Yes 3 No
Muhammad Tahir Khan
 

 
 
 
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