what do you mean by leading power factor & lagging power
factor
- 13 Answers
- 65355 Views
- Suzlon, I also Faced
- E-Mail Answers
Answer Posted / siddarth.m
If in a circuit, current lags behind the voltage then the
resulting power factor is said to be lagging. Ex: Inductive
loads.
If in a circuit, current leads the voltage then the
resulting power factor is said to be leading.
Ex: capacitive loads.
Power factor is the ratio of real power to reactive power
P.F.=COS#= TRUE POWER\APPARENT POWER
FOR INDUCTIVE LOAD INDUCTOR IS USED WHICH OPPOSES THE
CHANGE IN CURRENT IN THE CIRCUIT AND STORES THE ENERGY IN
THE FORM OF CURRENT AND LEAVES IT LATER. HENCE THE CURRENT
CURRENT WAVEFORM LAGS THE VOLTAGE WAVEFORM, AND THE POWER
FACTOR IS CALLED LAGGING./
FOR CAPACITIVE LOAD CAPACITOR IS USED WHICH OPPOSES THE
CHANGE IN VOLTAGE AND STORES THE ENERGY IN THE FORM OF
VOLTAGE AND LEAVES IT LATER. HENCE THE VOLTAGE WAVEFORM
LAGS THE CURRENT WAVEFORM, AND THE POWER FACTOR IS CALLED
LAGGING BUT THE CURRENT LEADS THE VOLTAGE AND HENCE THE
P.F. IS CALLED LEADING P.F.
power factor is the ratio of true power and apparent power.
when the load is inductive, the inductance tends to oppose
the flow of current, storing energy then realising it later
in the cycle. the current wave forms lags behind the
voltage wave form.
when the load is capacitive, the opposite occurs, and the
current wave form leads the voltage waveform.
| Is This Answer Correct ? | 18 Yes | 8 No |
Post New Answer View All Answers
Why human body feel electric shock?
why we have and use 3 phase not 2 or 4 or other in power system?
Approach of a cooling tower is the difference between temperatures of what factors?
A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N
HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER
How you calculate the repturing capacity of a HRC fuse
earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?
how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.
how to calculation increase power factor for single phase
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
what is the difference between switch yard to residential area.and how much required it.
Operation carried out in thermal power stations?
Rules and standards of electrical control wiring ?
What is instrumental error?
what is PDU in transformer?? which company manufacture??
