# what are the importance of reactive power?

what are the importance of reactive power?

Importance of Reactive Power •Voltage level control is important In power system. Varying reactive power will vary voltage level.

•Reactive power is directly proportional to voltage level means if reactive power is more voltage level is more and if the reactive power is less voltage level is less.

•Reactive power is very important to avoid blackouts. Power is equal to voltage into current (P=VI). So if the voltage level is low current level is high this will cause transmission lines to go offline.

•Reactive power is required with active power to do useful work.

•Reactive power is useful in transmitting or boosting the active power in transmission lines with less losses.

•Inductive load like induction motor requires reactive power for useful work.

•Reactive power is required to generate magnetic flux.

## Related Questions

Description : Explain the term reactive power. Why it is sometimes essential to measure reactive power?

Answer : Reactive power: The reactive power (Q) is defined as the product of voltage(V), current (I) and sine of angle between voltage(V) and current( I) Therefore Reactive power Q = V I ... power so that corrective measures can be taken accordingly to maintain systems power factor near to the unity.

Description : List any two methods of reactive power measurement in 3 phase circuit.

Answer : Methods of reactive power measurement in 3 phase circuit: (i) Two single phase wattmeter method (ii) One single phase wattmeter method

Description : The reactive power transfer over a line mainly depends on

Answer : The reactive power transfer over a line mainly depends on lVsl- lVRl

Description : What is the formula for reactive power?

Answer : The formula for reactive power is, Reactive power = VI sin (phi) The unit of reactive power is VAR ( Volt ampere reactive). The reactive power is denoted by 'Q'. The formula for real power is, Real power = VI cos (phi) The unit of real power is watts. The real power is denoted by 'P'.

Description : Use Voltmeter, ammeter, wattmeter to determine active, reactive and apparent power consumed in given R-L series circuit, draw phasor diagram.

Answer : Practical Significance In the industry environment Electrical Engineering diploma graduate are expected to measure basic parameters like voltage, frequency, time period etc. for R-L series circuits. Therefore ... /varying L. 7. Draw the phasor diagram for each of reading for verification.