Network Theory And Analysis MCQ Questions & Answers

91

The number of tree branches for a network with the graph shown in figure.
Network Theory and Analysis mcq question image

A) depends on the choice of tree B) is less than 8 C) is exactly 8 D) is exactly 9

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Answer & Solution

Answer: Option B

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92

The time constant for given circuit will be
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A) 1/9s B) 1/4s C) 4s D) 9s

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Answer & Solution

Answer: Option C

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93

In an electrical circuit, fuse is blown and the circuit is cut-off due to-

A) Low voltage B) Excessive current C) High inductance D) Excessive voltage

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Answer & Solution

Answer: Option B

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94

Which one of the following statements is not correct?

A) A tree contains all the vertices of its graph B) A circuit contains all the vertices of its graph C) The number of f-circuits is the same as the number of chords D) There are at least two edges in a circuit

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Answer: Option B

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95

In the circuit shown, what value of R_L maximizes the power delivered to R_L?
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A) 2.4 Ω B) $$\frac{8}{3}$$ Ω C) 4 Ω D) 6 Ω

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Answer & Solution

Answer: Option C

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96

A terminal where three or more branches meet is known as

A) node B) terminus C) combination D) anode

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Answer: Option A

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97

The input impedance of the circuit shown in the figure, if the respective coil impedance Z₁ = (5 + j8) Ω and Z₂ = (3 + j8) Ω is
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A) (8 + 16j) Ω B) (2 + j0) Ω C) (15 + 64j) Ω D) (8 + 0j) Ω

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Answer: Option D

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98

Which of the following statement is correct:

A) The flow of current in the electric circuit involves discontinuous expenditure of energy B) The flow of current in the electric circuit requires energy for creating the current but not to maintain it C) In the magnetic circuit energy is needed continuously to maintain the flux D) In the magnetic circuit energy is needed for creating the flux initially but not maintain it

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Answer: Option D

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99

The impedance of a series RLC circuit is

A) $$\sqrt {{R^2} + X_L^2 + X_C^2} $$ B) $$\sqrt {{R^2} + X_L^2 - X_C^2} $$ C) $$\sqrt {{R^2} + {{\left( {{X_L} + {X_C}} \right)}^2}} $$ D) $$\sqrt {{R^2} + {{\left( {{X_L} - {X_C}} \right)}^2}} $$

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Answer & Solution

Answer: Option D

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100

The ABCD parameters of the following 2-port network are
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A) \[\left[ {\begin{array}{*{20}{c}} {3.5 + j2}&{20.5} \\ {20.5}&{3.5 - j2} \end{array}} \right]\] B) \[\left[ {\begin{array}{*{20}{c}} {3.5 + j2}&{30.5} \\ {0.5}&{3.5 - j2} \end{array}} \right]\] C) \[\left[ {\begin{array}{*{20}{c}} {10}&{2 + j0} \\ {2 + j0}&{10} \end{array}} \right]\] D) \[\left[ {\begin{array}{*{20}{c}} {7 + j4}&{0.5} \\ {30.5}&{7 - j4} \end{array}} \right]\]

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Answer: Option B

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Network Theory And Analysis MCQ Questions & Answers | ECE