Network Theory And Analysis - Study Mode
[#81] In the given circuit, the switch moves from position a to position b at t = 0. The expression of i (t) for t > 0 is given by:
Correct Answer
(A) $$ileft( t
ight) = frac{{{V_0}}}{R}left( {1 - {e^{frac{{ - t}}{ au }}}}
ight)$$
[#82] Consider the RLC circuit shown below. At a certain frequency f 0 the circuits behaves like a purely resistive circuits. The equivalent resistance of the parallel combination at that particular frequency f 0 is
Correct Answer
(A) 2.0 Ω
[#83] A battery is connected to a resistance causing a current of 0.5 A in the circuit. The current drops to 0.4 A when an additional resistance of 5 Ω is connected in series. The current will drop to 0.2 A when the resistance is further increased by
Correct Answer
(C) 25 Ω
[#84] With usual notation a two port resistive network satisfied the condition A = D = $$frac{3}{2}$$B = $$frac{4}{3}$$C The Z 11 of the network is
Correct Answer
(B) $$frac{4}{3}Omega $$
[#85] Match List-I with List-II and select the correct answer using the options given below: List-I List-II a. $$frac{{{{ ext{s}}^2} - { ext{s}} + 1}}{{{{ ext{s}}^2} + { ext{s}} + 1}}$$ 1. RL admittance b. $$frac{{{{ ext{s}}^2} + { ext{s}} + 1}}{{{{ ext{s}}^2} - { ext{s}} + 1}}$$ 2. RL impedance c. $$frac{{{{ ext{s}}^2} + 4{ ext{s}} + 3}}{{{{ ext{s}}^2} + 6{ ext{s}} + 8}}$$ 3. Unstable 4. Non- minimum phase
Correct Answer
(C) a-4, b-3, c-2