Network Theory And Analysis MCQ Questions & Answers

11

In a prototype filter the series arm and shunt arm impedance should be

A) Zero B) Resistive C) Reactive and same type D) Reactive and opposite type

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Answer & Solution

Answer: Option D

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12

Power factor is the ratio of

A) $$\frac{{{\text{Apparent Power}}}}{{{\text{Active Power}}}}$$ B) $$\frac{{{\text{Active Power}}}}{{{\text{Apparent Power}}}}$$ C) $$\frac{{{\text{Complex Power}}}}{{{\text{Real Power}}}}$$ D) $$\frac{{{\text{Reactive Power}}}}{{{\text{Complex Power}}}}$$

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Answer & Solution

Answer: Option B

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13

In an AC circuit, the voltage source V is as follows: V = 100sin(100t) volt. The rms value of voltage is

A) 35.35 V B) 40.35 V C) 80.7 V D) 70.7 V

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Answer & Solution

Answer: Option D

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14

A Coil consists of 750 turns and current of 10 A in the coil give rise to a magnetic flux of 1.2 mWb. Calculate the inductance of the coil?

A) L = 0.09 H B) L = 1 H C) L = 0.12 H D) L = 10 H

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Answer & Solution

Answer: Option A

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15

Three elements having conductance G₁, G₂ and G₃ are connected in parallel. Their combined conductance will be

A) $$\frac{1}{{\frac{1}{{{{\text{G}}_1}}} + \frac{1}{{{{\text{G}}_2}}} + \frac{1}{{{{\text{G}}_3}}}}}$$ B) $$\frac{{{{\text{G}}_1}{{\text{G}}_2} + {{\text{G}}_2}{{\text{G}}_3} + {{\text{G}}_3}{{\text{G}}_1}}}{{{{\text{G}}_1} + {{\text{G}}_2} + {{\text{G}}_3}}}$$ C) $$\frac{1}{{{{\text{G}}_1} + {{\text{G}}_2} + {{\text{G}}_3}}}$$ D) $${{{\text{G}}_1} + {{\text{G}}_2} + {{\text{G}}_3}}$$

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Answer & Solution

Answer: Option D

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16

Which of the following is a passive component?

A) Semi-conductor device B) Vacuum tube device C) Capacitors D) All of these

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Answer & Solution

Answer: Option C

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17

A two branch parallel circuit has a 20 Ω resistance and 1 H inductance in one branch and a 100 µF capacitor in the second branch. It is fed from 100 V ac supply, at resonance, the input impedance of the circuit is

A) 500 Ω B) 50 Ω C) 20 Ω D) 5 Ω

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Answer & Solution

Answer: Option A

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18

The Y-parameter matrix (mA/V) of the two port network in figure is
Network Theory and Analysis mcq question image

A) \[\left( {\begin{array}{*{20}{c}} 2&{ - 1} \\ { - 1}&2 \end{array}} \right)\] B) \[\left( {\begin{array}{*{20}{c}} 2&1 \\ { - 1}&2 \end{array}} \right)\] C) \[\left( {\begin{array}{*{20}{c}} 1&{ - 2} \\ { - 2}&1 \end{array}} \right)\] D) \[\left( {\begin{array}{*{20}{c}} 2&1 \\ 1&2 \end{array}} \right)\]

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Answer & Solution

Answer: Option A

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19

The impedance parameters of a two network are Z₁₁ = 6 Ω, Z₂₂ = 4 Ω, Z₁₂ = Z₂₁ = 3 Ω. What are the equivalent ABCD parameters?

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

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Answer & Solution

Answer: Option C

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20

A square pulse of 3 volts amplitude is applied to C-R circuit shown in the figure. The capacitor is initially uncharged. The output voltage V₂ at time t = 2 sec is
Network Theory and Analysis mcq question image

A) 3 V B) -3 V C) 4 V D) -4 V

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Answer & Solution

Answer: Option B

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Network Theory And Analysis MCQ Questions & Answers | ECE