Circuit Theorems In Ac Analysis MCQ Questions & Answers

1

Referring to the given circuit, what is V_TH if VS = 12 ∠0° V?
Circuit Theorems In Ac Analysis mcq question image

A) 4.69 ∠38.7° V B) 9.38 ∠38.7° V C) 12 ∠0° V D) 6 ∠0° V

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Answer & Solution

Answer: Option B

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2

Referring to the given circuit, find Z_TH if VS is 180° V.
Circuit Theorems In Ac Analysis mcq question image

A) 9.82 ∠-51.3° kΩ B) 9.38 ∠-51.3° kΩ C) 180 ∠-38.3° kΩ D) 19.2 ∠-38.3° kΩ

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Answer: Option B

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3

Determine V_TH when R1 is 180 Ω and XL is 90 Ω.
Circuit Theorems In Ac Analysis mcq question image

A) 135∠63.4° V B) 13.5∠63.4° V C) 12.2∠0° V D) 122∠0° V

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Answer & Solution

Answer: Option B

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4

The two basic components of a Thevenin equivalent ac circuit are

A) The equivalent voltage source and the equivalent series impedance B) The equivalent voltage source and the equivalent series resistance C) The equivalent voltage source and the equivalent parallel impedance D) The equivalent voltage source and the equivalent parallel resistance

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Answer & Solution

Answer: Option A

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5

One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.

A) True B) False

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Answer & Solution

Answer: Option B

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6

For the given circuit, find V_TH for the circuit external to RL.
Circuit Theorems In Ac Analysis mcq question image

A) 4.69 ∠51.3° V B) 4.69 ∠38.7° V C) 469 ∠38.7° mV D) 6 ∠0° V

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Answer & Solution

Answer: Option B

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7

Like Thevenin's theorem, Norton's theorem provides a method of reducing a more complex circuit to a simpler, more manageable form for analysis.

A) True B) False

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Answer: Option A

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8

The superposition theorem is useful for the analysis of single-source circuits.

A) True B) False

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Answer & Solution

Answer: Option B

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9

Referring to the given circuit, L
Circuit Theorems In Ac Analysis mcq question image

A) Must be in parallel with RL B) Must be placed in parallel with VS C) Must have a reactance equal to XC D) Has no effect on the result

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Answer & Solution

Answer: Option D

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10

In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.

A) True B) False

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Answer & Solution

Answer: Option A

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Circuit Theorems In Ac Analysis MCQ Questions & Answers | Electrical Engineering