how we can calculate power factor without knowing current in
230v 100w load ?
- 10 Answers
- 17443 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / nandu
this is approximation:
As we know that power factor can,t be grater than 1 and we
also know that our supply voltage variation is -10% to +10%
we can't take +10% because pf<=1
so -10% of 230 is v(10%)=207v
as we already know that pf=p/vi
=> i=p/v(10%) =100/207A
=> pf=100/230(100/207)=207/230=0.9
so power factor is (approximate) = 0.9
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / asheesh
to calculate power factor first we have to calculate
current. for this we can apply rated voltage to load and
then measure the current flowing through load by measuring
instrument and then
power factor = watt/rated voltage*current
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / ajayiet
ha ha he man are u all
insane.load rating is either in
kva or kw.100 w means that
either it is a motor load or
resistance.so pf is unity.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / remodeen
WITHOUT KNOWING CURRENT .,,, HOW WE CALCULATE PF???
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / amarnath
PF= 0.8 Default
Use the Formula P=V*I*Cos PI
P= Power= 100W
V= Voltage= 230V
I=?
Cos PI= 0.8
| Is This Answer Correct ? | 1 Yes | 3 No |
Answer / gnaneshwar
without knowing current we cannot find the powerfactor.As per
question we have voltage v=230 and power p=100w as per
ohm'slaw p=vi,so I=p/v you'll get current then powerfactor=p/vI
| Is This Answer Correct ? | 3 Yes | 9 No |
why surge protectetor work explain with the help of circut diagram?
what is VFD and where is use of it
what is the function of avr when synchronous generator act as synchronous motor
What is PCCB?
which type of motor is suitable for water suction pump ?
DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?
a voltmeter shows 100v..wat is to be done to make it read 150v.
what is earthing/
3 Answers B.Tech, CPCL, Mobiserv,
Control cables in S's will carry 1000v which is AC R DC? Pls answer me
how to identified power tranfer line is how much KV????
What is the difference between DOL starter and star delta starter
What are the disadvantages of thermal power plant?
-
Civil Engineering (5085) - Mechanical Engineering (4452)
- Electrical Engineering (16638)
- 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)
