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ALOK TIWARI

· started a discussion

· 1 Months ago

aaaaa (Question: 332126.0 )

30-j10 so b is right

Question:

In an ac circuit, V = (200 + j 40) V and I = (30 - j 10) A. The active and reactive power of the circuit are respectively

Options:
A)

6400 W, 800 VAR capacitive

B)

6400 W, 800 VAR inductive

C)

5600 W, 3200 VAR capacitive

D)

5600 W, 3200 VAR inductive

Solution:

Ans:(c)

V = 200 + j40

I = 30 - j10

S = VI* = (200 + j40) (30 + j10)

6000 + j2000 + j1200 – 400

S = 5600 + j3200

P = 5600, Q = 3200

Mahesh Kushwaha

· commented

· 1 Months ago

no take conjugate then 30+j10 is correct way.

Çhètâñ Ráj

· commented

· 1 Months ago

Bcz que m 30-j10 h or solution m 30+j10 s kiya

Çhètâñ Ráj

· commented

· 1 Months ago

Ys.. Right bro it's B right

ALOK TIWARI

· commented

· 1 Months ago

i is lagging so inductive
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