Network Theory And Analysis - Study Mode

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[#221] The circuit shown in the Figure, is to be scaled to an impedance level of 5 kΩ and a resonant frequency of 5 M rad/s. Which one of the following is a correct set element values for the scaled circuit?

(A) 2.5 Ω, 0.2 mH, 200 pF

(B) 5 kΩ, 0.2 mH, 200 pF

(C) 5 kΩ, 0.2 mH, 200 µF

(D) 5 kΩ, 0.1 mH, 0.4 µF

Correct Answer

(B) 5 kΩ, 0.2 mH, 200 pF

[#222] The common voltage across parallel branches with different voltage sources can be determined by

(A) Superposition theorem

(B) Thevenin's theorem

(C) Norton's theorem

(D) Millman's theorem

Correct Answer

(D) Millman's theorem

[#223] Six light bulbs are connected in parallel across 110 volt. Each bulb is 75 Watt. The current flows through each bulb is

(A) 0.682 A

(B) 0.482 A

(C) 0.382 A

(D) 0.282 A

Correct Answer

(A) 0.682 A

[#224] For a 3-pF capacitor with 20 V across it, the energy stored will be:

(A) 60 J

(B) 600 pJ

(C) 60 pJ

(D) 6 J

Correct Answer

(B) 600 pJ

[#225] Two similar mutually coupled coils have a total inductance of 900 mH co-efficient of coupling is 0.5. The self inductance of each coil is

(A) 300 mH

(B) 150 mH

(C) 75 mH

(D) 50 mH

Correct Answer

(A) 300 mH