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The question makes no sense. It asks why a pure inductive load is used ... instead of a pure inductive load. Please restate the question.

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โˆ™ 2011-11-12 02:24:51
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Q: Why pure inductive load is used to for finding zero power factor instead of using pure inductive load?
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What is the power factor of an inductive load?

The power factor for any reactive load, inductive or capacitive, is the cosine of the phase angle between voltage and current. It is also the ratio of volt-amps over watts. We call it a lagging power factor if it is inductive, and a leading power factor if it is capacitive.


When you should use synchronous motor instead of capacitor for power factor correction?

We shall use Synchronous machines where inductive loads are more. Due to Inductive loads power consumption will be more due to leading power factor. To compensate this we shall use synchronous motor to improve the power factor. Shiva Kumar.N MBNR,AP


Why you add capacitor in parallel for power factor correction?

A poor power factor is typically the result of inductive load. Capacitors cause the opposite effect of inductors, so placing them in parallel with inductive loads will counteract the effects of the inductive load, bringing power factor closer to unity.


How you can get unity power factor?

In order to get an unity power factor, the capacitive load and inductive load must be equal.


What is the main reason for Low Power Factor?

inductive/lagging load


What happens if you overcompensate with 20mF capacitor for the inductive circuit instead of 10mF capacitor which already satisfy the power factor to reach 0.95?

there would be no problem with this == == The inductive circuit has a 'lagging' power factor. If you over-compensate with too much capacitive reactance, you could go over the top (past 1.0) , and end up with a leading power factor that may even be numerically worse than when you started. == == == ==


What is zero power factor?

A power factor equal to zero means that the load is purely inductive or purely capacitive, and no power is available to do work, because all of the generated power is going into charging the electric field in the capacitor, or the magnetic field (if an inductive load).


What effect do var's have on the power factor of the circuit?

VAr is reactive power, caused by either inductive or capacitive loads. The ideal power factor to have is 1, anything less than that is a loss on the network. The effect of VArs on the circuit though depends. If you have a load that is mainly inductive, then adding more inductive reactance will lower the power factor. However, if you introduce capacitive reactance this will increase the power factor, and the opposite is true if its a mainly capacitive circuit. So VArs will either increase or decrease the power factor depending on the load of the circuit. The ideal situation is to balance inductive reactance with capacitive reactance so they in effect cancel each other out and power factor is 1.


Why you are using capacitor banks to improve power factor?

A poor power factor is caused by inductive loads or electronic devices. These loads cause excess current to flow in the circuit reducing the efficiency. Inductive devices are considered to be a "load" for reactive power. Reactive power does not actually do any real work by is required to develop magnetic fields. Capacitors are considered to be "sources" of reactive power. So these capacitors will supply the reactive power to the inductive loads instead of the utility supplying this power. This is why capacitors are used to improve a poor or low power factor. This is just a very brief description on this topic. Power factor correction is becoming a very complex topic with more and more poor power factor loads being used every day.


What will be the PF if measured after capacitor bank?

Capacitors are used to improve an inductive load's power factor towards unity. The power factor before and after adding the capacitor bank depends entirely on the inductive/capacitive values involved.


What is the difference between an inductive and a capacitive load?

Inductive loads involve devices which establish magnetic fields. Capacitive loads involve devices which establish electric fields. Another way of looking at it is that inductive loads have a lagging power factor, whereas capacitive loads have a leading power factor.


What is the relationship betweenth the power factor and the load?

If the load is resistive-inductive, then it will have a lagging power factor; if it is resistive-capacitive, then it will have a leading power factor. Power factor is defined as the angle by which the load current lags or leads the supply voltage.

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