Discussion Question and Answer About The Power Factor in Simple Language

Discussion Question and Answer About The Power Factor in Simple Language
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Hope you all are well. Today we will talk about the power factor and the details. We have read a lot about the power factor in the textbook, but today let us know about the power factor in simple terms. The topics that will be in today’s writing:

  1. What is the power factor or who is detailed?
  2. Types of Power Factors
  3. Power factor 1 Or 0.6 What does it mean
  4. What is Lagging, Leading and Unity Power Factors?
  5. What is power factor correction?
  6. What is the problem with the system when the power factor is low?
  7. What are the economic power factor and its formula?
  8. What is the value of the power factor during resonance in AC series circuits?

What is the power factor?

The power factor is usually the cosine angle between the voltage and the current. In other words, the ratio of active power and apprentice power is called the power factor. Power factor K is usually cosθ Is expressed by. It has no unit and is expressed as a percentage.

power factor questions and answers

Details: The power factor indicates how much of the power we can use for a percentage. Power factor value(0.1)Up to

We know that cosθ Is expressed by the power factor but θ  Refers to the angle between the current and the voltage.

In this way, the cosine value of the angle between the current and the voltage is called the power factor.

This is an ideal value if the power factor is not known correctly 80%That is 0.8 The logging is calculated. The active power is measured in kilowatts and in the ampere volt-ampere (KVA) Is measured.

  • Active power  (kW)=VIcosθ
  • Apprentice Power (kVA)=VI
  • Power factor cosθ=kW/kVA

TYPES OF POWER FACTORS

There are usually three types of power factor

  • Lagging power factor.
  • Leading power factor.
  • Unity power factor.

Power factor 1 Or 0.6 What does it mean

What is it mind 1 That means we understand that 100 kVA If you supply 100 kW Active power will be available. And the power factor  (cosθ) Value 0.6 That means we are 100 kVA If you supply a 60 kW Active power pub.

What is Lagging, Leading and Unity Power Factors?

Lagging power factor: The lagging power factor is called the lagging power factor when the current is behind the voltage or if the inductive load is higher than the capacitive load in the AC circuit. For example, 80 Degree lagging is a power factor that is subject to the current-voltage 80 The degree is backward.

power factor questions and answers

Leading Power Factor: If the capacitive load is higher than the inductive load in the AC circuit, that is, it is called the leading power factor if the current is above the voltage. For example, 80 Degree leading power factor is higher than the current-voltage 80 The degree will be ahead.

Unity Power Factor: When the current and voltage are in the same position in the circuit, that is, when the inductive and capacitive loads in the circuit are equal, they are called the unity power factor.

power factor questions and answers
Phase Diagram

What is power factor correction?

Power factor correction is called reducing the amount of reactive power in a system. Power factor correction and improvement is done using a capacitor bank or synchronous motor. Power factor correction is done using a capacitor banks in different industries.

power factor questions and answers

What is the problem with the system when the power factor is low?

When the power factor is low, there are several types of problems with the system:

  • Line loss increases.
  • The size of the cable is much needed.
  • Power system efficiency is reduced.
  • The initial cost goes up, so the cost per unit increases

What are the economic power factor and its formula?

The power factor means that the annual maximum saved is the power factor which is called the economic power factor.

Source:

power factor questions and answers

What is the value of the power factor during resonance in AC series circuits?

Power factor value in resonance state in AC series circuit 1 Or unity. Inductive reactance and capacitive reactance equals resonance in the AC series circuit  XL = XC.

In this case, the total impedance Z = R+ J(XL-XC) = R Either.

Power factor Cosθ= R/Z = R/R = 1 Either.

Again θ = Cos1 1 = 00 Either.

This indicates that the phase angle between the current and the voltage is zero during the resonance.


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