SSE JE Electrical Engineering 24 March 2021 Shift 2 Paper

Question : 136 of 200

Marks: +1, -0

The phase voltage and current across a load element are 100.0 ∠45° V and 5.0 ∠15° A. respectively. Determine the impedance and admittance of the load.

Z = 20.0 ∠-30° Ω and Y = 0.05 ∠30° S
Z = 20.0 ∠30° Ω and Y = 0.05 ∠-30° S
Z = 0.05 ∠30° Ω and Y = 20 ∠-30° S
Z = 0.05 ∠-30° Ω and Y = 20 ∠30° S

Validate

Solution:

\V = 100.0 ∠45° \V

and

\I = 5.0 ∠15° \A

\Z =\V/\I ={100∠45}/{5∠15}=20∠30°\Ω

\Y=1/\Z=1/{20∠30}=0.05∠-30°\S

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