railway RRB JE (CBT I + CBT II) Mock Test 2024 Network Theory Sinusoidal Steady State Analysis Power in A.C. Circuits
which of the following formula is correct:
1
\(KVA = \sqrt { (KW)^2 + (KVAR)^2}\)
2
KW = KVA cos ϕ
3
KVAR = KVA sin ϕ
4
All of the above