Network Theory And Analysis - Study Mode

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[#56] The length of a certain conductor of resistance 100 Ω is doubled and its cross-sectional area is halved. Its new resistance is:

(A) 100 Ω

(B) 200 Ω

(C) 50 Ω

(D) 400 Ω

Correct Answer

(D) 400 Ω

[#57] Find the current I in figure below:

(A) 16.2 A

(B) 6.5 A

(C) -25 A

(D) 35.7 A

Correct Answer

(A) 16.2 A

[#58] In the circuit shown, for different values of R, the values of V and I are given, other elements remaining the same When R = ∞, V = 5V When R = 0, I = 2.5 A When R = 3 Ω, the value of V is given by

(A) 1 V

(B) 2 V

(C) 3 V

(D) 5 V

Correct Answer

(C) 3 V

[#59] Which one of the following theorems can be conveniently used to calculate the power consumed by the 10 Ω resistor in the network shown in the figure below?

(A) Thevenin's theorem

(B) Maximum power transfer theorem

(C) Millman's theorem

(D) Superposition theorem

Correct Answer

(D) Superposition theorem

[#60] With 10 V DC connected at port A in the linear nonreciprocal two port network shown below, the following were observed 1. 1 Ω connected at port B draws a current of 3 A 2. 2.5 Ω connected at port B draws a current of 2 A The current drawn by 7 Ω connected at port B

(A) $$frac{3}{7}{ ext{A}}$$

(B) $$frac{5}{7}{ ext{A}}$$

(C) $$1,{ ext{A}}$$

(D) $$frac{9}{7}{ ext{A}}$$

Correct Answer

(C) $$1,{ ext{A}}$$