how we can calculate power factor without knowing current in
230v 100w load ?

Answer Posted / 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



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

explain supply side and demand side energy management with advantages & disadvantages

1797


What are the difference between normal application Transformer and Solar application Transformer?

1310


What is Load sharing of Transformer ?

1649


How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?

1517


What is the Surge suppresor? Why using in a UDB's and How it works?

1813






What is the lifetime of a Thyristor? Is there a recommended lifetime for thyristors after which they should be replaced?

2310


what is the reactive power what is the use of it in system

1738


While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

1553


how works inductive &capacitive sensors?

1637


in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?

1901


Explain difference between stand by earth fault and residual earth fault protection?

1629


Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line; i.e. the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The maximum value of n1(P) over all configurations P of 19 points in the plane is 18

1759


what is p.s impedance measurement test in earthing transformer?

1940


what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?

1621


I need bhel previous year quetion papers for electrical engineering department.I searched but i could not find out

1736