GATE Prev Year : Networks Test-7

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Question 1

In the circuit shown below, the value of RL such that the power transferred to RL is maximum is

• A5 Ω
• B10 Ω
• C15 Ω
• D20 Ω

Question 2

If the scattering matrix [S] of a two port network is then the network is

• ALossless and reciprocal
• BLossless but not reciprocal
• CNot lossless but reciprocal
• DNeither lossless nor reciprocal

Question 3

The switch in the circuit shown was on position a for a long time and is moved to position b at time t = 0. The current i(t) for t > 0 is given by

• A
• B
• C
• D

Question 4

In the AC network shown in the figure, the phasor voltage V_AB (in Volts) is:

• A0
• B5∠30°
• C12.5∠30°
• D17∠30°

Question 5

Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

• A0.8 Ω
• B1.4 Ω
• C2 Ω
• D2.8 Ω

Question 6

A negative resistance R_neg is connected to a passive network N having driving point impedance Z₁(s) as shown below. For Z₂(s) to be positive real,

• A
• B|R_neg|≥Re |Z₁(jw)|, for all w
• C
• D

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