Network Theory And Analysis MCQ Questions & Answers

1

Specific resistance of a conductor depends upon

A) Dimensions of the conductor B) Composition of conductor material C) Resistance of the conductor D) Both A and B

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Answer & Solution

Answer: Option B

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2

Two coils N₁ and N₂ turns are would concentrically on a straight cylindrical core of radius r and permeability µ. The windings have length \[{l_1}\] and \[{l_2}\] respectively as shown in figure.
The mutual inductance will be
1. Proportional to N₁, N₂
2. Proportional to µ
3. Inversely proportional to \[{l_1}\]
4. Inversely proportional to r²
Which of these statements are correct?
Network Theory and Analysis mcq question image

Network Theory and Analysis mcq question image

A) 1, 2, 3 and 4 B) 2, 3, and 4 only C) 1, 2, and 3 only D) 1, 3 and 4 only

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Answer & Solution

Answer: Option C

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3

Given I_s = 10, V_s = 10, the current I in the 3 ohm resistor is given by
Network Theory and Analysis mcq question image

A) -2 B) 2 C) 4 D) 6

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Answer & Solution

Answer: Option B

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4

In the given circuit, the switch moves from position a to position b at t = 0. The expression of i (t) for t > 0 is given by:
Network Theory and Analysis mcq question image

A) $$i\left( t \right) = \frac{{{V_0}}}{R}\left( {1 - {e^{\frac{{ - t}}{\tau }}}} \right)$$ B) $$i\left( t \right) = \frac{{{V_0}}}{R}\left( {1 - {e^{\frac{{ - 2t}}{\tau }}}} \right)$$ C) $$i\left( t \right) = \frac{{{V_0}}}{{2R}}\left( {1 - {e^{\frac{{ - t}}{\tau }}}} \right)$$ D) $$i\left( t \right) = \frac{{{V_0}}}{R}\left( {1 - {e^{\frac{{ - t}}{{2\tau }}}}} \right)$$

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Answer & Solution

Answer: Option A

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5

Consider the RLC circuit shown below. At a certain frequency f₀ the circuits behaves like a purely resistive circuits. The equivalent resistance of the parallel combination at that particular frequency f₀ is
Network Theory and Analysis mcq question image

A) 2.0 Ω B) 1.0 Ω C) 0.5 Ω D) 3.0 Ω

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Answer & Solution

Answer: Option A

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6

A battery is connected to a resistance causing a current of 0.5 A in the circuit. The current drops to 0.4 A when an additional resistance of 5 Ω is connected in series. The current will drop to 0.2 A when the resistance is further increased by

A) 10 Ω B) 15 Ω C) 25 Ω D) 40 Ω

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Answer & Solution

Answer: Option C

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7

With usual notation a two port resistive network satisfied the condition A = D = $$\frac{3}{2}$$B = $$\frac{4}{3}$$C
The Z₁₁ of the network is

A) $$\frac{5}{3}\Omega $$ B) $$\frac{4}{3}\Omega $$ C) $$\frac{2}{3}\Omega $$ D) $$\frac{1}{3}\Omega $$

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Answer & Solution

Answer: Option B

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8

Match List-I with List-II and select the correct answer using the options given below:

List-I	List-II
a. $$\frac{{{{\text{s}}^2} - {\text{s}} + 1}}{{{{\text{s}}^2} + {\text{s}} + 1}}$$	1. RL admittance
b. $$\frac{{{{\text{s}}^2} + {\text{s}} + 1}}{{{{\text{s}}^2} - {\text{s}} + 1}}$$	2. RL impedance
c. $$\frac{{{{\text{s}}^2} + 4{\text{s}} + 3}}{{{{\text{s}}^2} + 6{\text{s}} + 8}}$$	3. Unstable
	4. Non- minimum phase

A) a-1, b-2, c-3 B) a-1, b-4, c-2 C) a-4, b-3, c-2 D) a-4, b-3, c-1

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Answer & Solution

Answer: Option C

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9

What is the unit of sheet resistivity?

A) Ohms per centimeter B) Ohms-centimeter C) Ohms per square centimeter D) Ohms-square centimeter

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Answer & Solution

Answer: Option C

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10

The effective inductance of two coils with self inductances L₁, L₂ and mutual inductance M (as connected shown in figure) will be:
Network Theory and Analysis mcq question image

A) L₁ + L₂ + M B) L₁ - L₂ - 2M C) L₁ + L₂ + 2M D) L₁ + L₂ - 2M

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Answer & Solution

Answer: Option D

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Network Theory And Analysis MCQ Questions & Answers | ECE