Ask now - it's free
28 views
in Electrical Engineering by
Explain the term reactive power. Why it is sometimes essential to measure reactive power?

Know someone who can answer this question ? Share this on Facebook, Twitter, Whatsapp

← Prev Question Next Question →

1 Answer

0 like 0 dislike
by

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 sinΦ The reactive power is also called as imaginary power and its unit is VAR or kVAR. Reactive power is part of total power which is not consumed by the load. Reactive power simply travels from source to load and back. It is therefore useless power and hence should be minimized.

Need to measure reactive power: Increase in reactive power causes the reduction in power factor. There are several disadvantages of poor power factor. The supply utility system has decided to pay incentive or charge penalties if power factor of consumer increases or decreases beyond certain limit. Therefore it is essential to measure the reactive power so that corrective measures can be taken accordingly to maintain systems power factor near to the unity.

Related questions

1 answer 49 views
0 answers 39 views
2 answers 115 views
0 answers 36 views
1 answer 42 views

Want to ask a new question ? :-> Ask Question

Want to help the community by giving answer? :-> Unanswered Questions

Here anyone can ask and answer any question. Get help and can help to any engineering problem including Electrical, Electronics, Mechanical, Telecommunication, Instrumentation, Computer, Mathematics, Physics etc. Get answers to questions. Help is always 100% free!

Categories

...