Network Theory And Analysis MCQ Questions & Answers

21

To determine the polarity of the voltage drop across a resistor, it is necessary to know

A) Value of current through the resistor B) Direction of current through the resistor C) Value of resistor D) E.m.f. in the circuit

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Answer & Solution

Answer: Option B

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22

Thevenin resistance R_th is found

A) By removing voltage sources along with their internal resistances B) By short circuiting the given two terminals C) Between any two open terminals D) Between same short terminals as for E_th

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Answer & Solution

Answer: Option D

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23

An ideal voltage source has

A) Zero internal resistance B) Open circuit voltage equal to the voltage on full load C) Terminal voltage in proportion to current D) Terminal voltage in proportion to load

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Answer & Solution

Answer: Option A

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24

Kirchhoff’s law is applicable to

A) Passive networks only B) A.C. circuits only C) D.C. circuits only D) Both A.C. as well D.C. circuits

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Answer & Solution

Answer: Option D

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25

A star circuit has element of resistance $$\frac{{\text{R}}}{2}.$$ The equivalent delta elements will be

A) $$\frac{{\text{R}}}{6}$$ B) $$\frac{3}{2}{\text{R}}$$ C) 2R D) 4R

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Answer & Solution

Answer: Option B

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26

Millman’s theorem yields

A) Equivalent resistance B) Equivalent impedance C) Equivalent voltage source D) Equivalent voltage or current source

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Answer & Solution

Answer: Option D

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27

While calculating R_th in Thevenin’s theorem and Norton equivalent

A) All independent sources are made dead B) Only current sources are made dead C) Only voltage sources are made dead D) All voltage and current sources are made dead

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Answer & Solution

Answer: Option A

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28

A nonlinear network does not satisfy

A) Superposition condition B) Homogeneity condition C) Both homogeneity as well as superposition condition D) Homogeneity, superposition and associative condition

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Answer & Solution

Answer: Option C

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29

Which of the following is non-linear circuit parameter?

A) Inductance B) Condenser C) Wire wound resistor D) Transistor

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Answer & Solution

Answer: Option D

Solution:

The non-linear circuit parameter among the given options is Transistor.

A transistor is a semiconductor device that can amplify and switch electronic signals. It exhibits non-linear behavior, which means the output current or voltage is not directly proportional to the input current or voltage. The relationship between the input and output of a transistor is governed by complex exponential functions and is highly dependent on the operating conditions and biasing. This non-linearity makes transistors crucial components in various electronic circuits, enabling functions like amplification and signal processing.

30

Efficiency of power transfer when maximum transfer of power c xerosis

A) 100% B) 80% C) 75% D) 50%

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Answer & Solution

Answer: Option D

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Network Theory And Analysis MCQ Questions & Answers | ECE