00:01
Hello students, power factor represent as pf it is a measure of how effectively electrical power is being utilized in a circuit.
00:29
So, it is a ratio of real power and the apparent power in the circuit.
00:47
So, power factor is represented as a dimensionless value and it is the value range between 0 and 1 as or a percentage between 0 % and 100%.
01:08
First, let's talk about the leading power factor.
01:17
So, a leading power factor occurs in a circuit when the load has capacity characteristic.
01:31
So, here in a capacity load the current leads the voltage waveform meaning that current reaches its peak value before the voltage peaks in a capacity load.
02:02
So, here capacity loads are typically found in systems that use capacitors.
02:07
So, leading power factor is represented by a positive value and it means that the circuit is generating a leading reactive power component.
02:44
So, now let's talk about lagging power factor.
02:52
So, a lagging power factor occurs in a circuit when the load has inductive characteristics.
03:05
In an inductive load, the current lags the voltage waveform that is meaning that the current reaches the peak after the voltage reaches the peak.
03:24
So, inductive loads are commonly found in systems with motors that is in motors, transformers etc...