Is it possible to power factor more than unity?
Answers were Sorted based on User's Feedback
Answer / praveen420
No, it is not possible because
p.f=cos(angle)and cosine function is between (-1,1)....
| Is This Answer Correct ? | 57 Yes | 5 No |
Answer / rinto
no, it is not poosible to be the power facto more than
unity. because, cosine function has a maximum value 1 which
represents the p.f
| Is This Answer Correct ? | 22 Yes | 2 No |
Answer / rakesh
no, power factor can never be more than unity.
power factor is the ratio of real power delivered to the
apparent power.
=> pf = P/|S|
where P = real power,
s = complex power. s= sqrt(p^2 + q^2)
this means at most p can be equal to |s| if Q
i.e reactive power is zero.
so at most power factor can be unity.
real power (p)= v*i*cos(angle)
and apparent power = v*i
and that's why pf comes cos(angle).
| Is This Answer Correct ? | 17 Yes | 0 No |
Answer / shafi
No, Its not possible because cosine never more than 1
| Is This Answer Correct ? | 7 Yes | 0 No |
power factor = cosine of angle between v&I & angle cannot
be less than zero
cos0 = 1 if angle increases p.f will decrese
cos 30=0.8
cos 60=0.5
cos 0=1 there fore p.f cant be less than unity
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / mr.sharif
Actually P.F is related to the loads so it is not possible
for the P.F to beyond unity,If it goes beyond unity then it
is treated as power source & it is no more called as load
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / gunasekaran
yes it is possible but it is not necessary.
| Is This Answer Correct ? | 1 Yes | 17 No |
What is the safe limit of voltage between earth and neutral in india.
2 Answers Incepta Pharmaceuticals,
what is negative current?
To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
what is doubling factor in making current of a breaker?
On the secondary side of a distribution transformer, we use 1c x 630 sq mm cable. Why dont we use 4 core cables instead of 1 core cables on the secondary. Why we use aluminium cable glands on the outgoing instead of brass cable glands?
What is the difference between Droop vs Isoch Control?
why we use core type and shell type transformers?
what is insulation percentage of motor 3 phase and singlephase
What will be result if we connect LT votage to the terminal of HT Transformer?
If we have to find the inductance of a dc shunt motor then by giving dc supply or ac supply and what is the reason for it. (this example is from "to determine the transfer function of a dc shunt motor ")
how commomn gate triggering is given for TRIAC ? other thyristor wont be efffected?
Installation method of self treated earth electrode.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)