Engineering Board Exam Reviewer · RL Circuits · medium

An inductive load takes 2000 VA at a power factor of 0.8 lagging. What is its reactive power?

  1. 1600 var
  2. 2500 var
  3. 800 var
  4. 1200 var

Answer

D. 1200 var

Solution

P=S =1600 W. Q=sqrt(S2-P2)=sqrt(20002-16002)=1200 var.

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