what do you mean by leading power factor & lagging power
factor
Answer Posted / er. ankush miglani 9718151073
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.
| Is This Answer Correct ? | 45 Yes | 10 No |
Post New Answer View All Answers
how can decide the current rating of oltc
what are the possible reaons & remedies if resistance of NGR getting heat up
11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??
At what factor resistance r of a conductor depends?
what is parellel power factor correction?
What is the mmf,rgt and ngt please brief completely
Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp
why lightning arrestor are made in two stack of insulator but why not cvt
solar energy light efficiency & disadvantages?
How much ph is maintained of water resistance starter for slipring induction motor ?
WHY THE COLOR OF OUTDOOR TRANSFORMER IS BLUE ONLY???
how we select ac fuse rating of an power inverter???
Why is back emf used for a DC motor? Highlight its significance.
WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?
What is minimum phase system?