Network Theory And Analysis MCQ Questions & Answers

91

The induced emf in a coil is given as:

A) $$e = L\frac{{{d^2}i}}{{d{t^2}}}$$ B) $$e = L\frac{{d\varphi }}{{dt}}$$ C) $$e = L\frac{{di}}{{dt}}$$ D) $$e = - L\frac{{di}}{{dt}}$$

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Answer & Solution

Answer: Option D

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92

A switch is connected in between a 12 V battery and an uncharged capacitor and a 1 KΩ resistor. At the time instant when the switch is closed, the voltage across the capacitor is:

A) 6 V B) 12 V C) 0 V D) 24 V

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Answer & Solution

Answer: Option C

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93

The Y parameters of a four-terminal block are \[\left[ {\begin{array}{*{20}{c}} 4&2 \\ 1&1 \end{array}} \right].\] A single element of 1 ohm is connected across as shown in the given figure. The new Y parameters will be
Network Theory and Analysis mcq question image

Network Theory and Analysis mcq question image

A) \[\left[ {\begin{array}{*{20}{c}} 5&1 \\ 0&2 \end{array}} \right]\] B) \[\left[ {\begin{array}{*{20}{c}} 4&3 \\ 2&2 \end{array}} \right]\] C) \[\left[ {\begin{array}{*{20}{c}} 3&2 \\ 1&2 \end{array}} \right]\] D) \[\left[ {\begin{array}{*{20}{c}} 4&2 \\ 1&1 \end{array}} \right]\]

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Answer & Solution

Answer: Option A

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94

A source of angular frequency 1 rad/sec has a source impedance consisting of 1 Ω resistors in series with 1 H inductance. The load that will obtain the maximum power transfer is

A) 1 Ω resistance B) 1 Ω resistance in parallel with 1 H inductance C) 1 Ω resistance in series with 1 F capacitor D) 1 Ω resistance in parallel with 1 F capacitor

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Answer & Solution

Answer: Option C

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95

If $$Z\left( s \right) = \frac{{\left( {s + 4} \right)\left( {s + 9} \right)}}{{\left( {s + 1} \right)\left( {s + 16} \right)}}$$ is a driving point impedance, it represents an

A) R-C impedance B) R-L impedance C) L-C impedance D) R-L-C impedance

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Answer & Solution

Answer: Option A

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96

A bar of certain material having rectangular cross section is one metre in length and has a cross section of 0.0001 square metres. The value of its longitudinal resistance is 100 ohms. The value of its resistivity would be:

A) 1 ohm metre B) 0.01 ohm metre C) 0.0001 ohm metre D) 100 ohm metre

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Answer & Solution

Answer: Option B

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97

For the circuit given, find the current I at resonance condition
Network Theory and Analysis mcq question image

A) 120 A B) 128 A C) 132 A D) 134 A

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Answer & Solution

Answer: Option A

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98

Which of the following capacitors has the highest cost per µF?

A) Plastic B) Electrolytic C) Mica D) Air

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Answer & Solution

Answer: Option B

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99

In the circuit shown in figure, determine the value of i_x-
Network Theory and Analysis mcq question image

A) i_x = 1A B) i_x = 1.5A C) i_x = 0.14A D) i_x = 1.4A

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Answer & Solution

Answer: Option D

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100

The crest factor of a sine wave having peak value of 12 V and rms value 8.48 is

A) 0.415 B) 1.415 C) 2.415 D) 3.415

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Answer & Solution

Answer: Option B

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Network Theory And Analysis MCQ Questions & Answers | ECE