suchayandas

 Profile Answers by suchayandas Questions by suchayandas

• Aug 14th, 2008

 

In simple,we can say that Power Factor is a quantity which has important implications when sizing a UPS system  & power distribution equipment.
Power factor is the ratio of real power(P) to the apparent power(S).
p.f, cos ♂=P/S

Or, Power factor may be expressed as the ratio of real current to the total current in a circuit.
So, Power factor(p.f.)= Real Current/Total current = kW/kVA

Ravindra2008

 Profile Answers by Ravindra2008 

• Oct 20th, 2008

 

In A.C. ckt their is some difference in vtg & current that angle is called as phase angle,the cosine of that angle is called as power factor. It is the ratio of resistance to impedance. 

venkey_048

 Profile Answers by venkey_048 

• Oct 29th, 2009

 

Power factor is the ratio between Real power to the Apparent power. It indicates, how much power was actually utilised by the present system. For example, if any system had a power factor of 0.8 means, it can be able to utilise only the 80% of the Power supplied to it. The other 20% power is utilised to compensate the magnetising needs in the system, and it is called as Reactive power. So, finally we can't use the Reactive power, we can only use the Active power in the total apparent power.