Follow Our FB Page << CircleMedia.in >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...

what happens if power factor is maintained at 0.9?give me
the answer in technicall way rather than telling the
penality n all

Answers were Sorted based on User's Feedback

what happens if power factor is maintained at 0.9?give me the answer in technicall way rather than..

See the first thing is Power factor is angle between
voltage & current. see most of our load is inductive, & in
inductive load current always lags the supply voltage. In
unity P.f.condition current & voltage always in phase with
each other.
since P=VIcos(angle between V & I )
Now for a constant power as your pf changes i.e. decreases
to keep power demand constant current has to be increase as
increases , it causes increase in your copper losses
(I*I*R), voltage drop(I*R). And to keep voltage constant
more reactive power has to be provide.
generally any supply company penalties for more demand of
reactive power.

 Is This Answer Correct ? 11 Yes 4 No

what happens if power factor is maintained at 0.9?give me the answer in technicall way rather than..

The relation between the KW and KVA are

KW = KVA*Cos(phi)...SO as the power factor is getting lower
the actual outptut that we obtain frm a transformer will be
lower than the desired output for a particular value of
vlotage and current in that circuit.That is why in
industries, much importance in given for power factor
improvement.

 Is This Answer Correct ? 4 Yes 1 No

what happens if power factor is maintained at 0.9?give me the answer in technicall way rather than..

kw=kvacos(phi)... so larger the value of pf, smaller is the
amount of kva required for supplying active power... for
example if we require 8kw power output and pf is0.8 kva req
is 10.. but if pf is 0.5 kva req is 16... also for
transfering a const power if pf is low,... then value of
current will be high , so cu loss increases so does the
size of conductor..

 Is This Answer Correct ? 3 Yes 0 No

what happens if power factor is maintained at 0.9?give me the answer in technicall way rather than..

All the above answers are right. I just want to add few
points to that.

For transmitting a const power,

lower the power factor, greater will be the current and
hence greater will be losses and larger area of cross
section of conductor will be required.

By maintaining pf at 0.9, our active power will be high as
P= VI cos (pi), larger the pf larger the active power for a
fixed voltage and current.

 Is This Answer Correct ? 3 Yes 1 No

what happens if power factor is maintained at 0.9?give me the answer in technicall way rather than..

If the power factor is .9 then we get a power loss.
Because power = volatse*current*cos phi(active power)
there for we also paid tha bill including the losses and
the losses is an usefullpower.power factor depend on the
inductive
capacitive
resitive

 Is This Answer Correct ? 0 Yes 1 No

More Electrical Engineering Interview Questions

what will happen if the frequency supplied is more than the frequency of the instrument...?

PAC and simple Ac different

when a hand crancked meggar is used to check most three phase induction motors, how many tests r rquired? Why?

explain working principle of earth leakage relay

As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

can we install LT panel & HT panel in one room?

What happen if we give resistance to the armatuure of a dc motor?a

what is mcb

How to calculate meter constant @ HT yard

3. What is Impedance Voltage in Transformer?

What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?

why induction motor takes high current?

Categories
• Civil Engineering (5080)
• Mechanical Engineering (4448)
• Electrical Engineering (16619)
• Electronics Communications (3915)
• Chemical Engineering (1093)
• Aeronautical Engineering (214)
• Bio Engineering (96)
• Metallurgy (361)
• Industrial Engineering (258)
• Instrumentation (2993)
• Automobile Engineering (332)
• Mechatronics Engineering (97)
• Marine Engineering (123)
• Power Plant Engineering (171)
• Textile Engineering (575)
• Production Engineering (0)
• Satellite Systems Engineering (106)
• Engineering AllOther (1378)