GATE 2007 ECE Network Theory - Complete Video Solutions with Answers

2007

1. An independent voltage source in series with an impedance Z_s = R_s + j X_s delivers a maximum average power to a load impedance Z_L when
a) Z_L = R_s + jX_s
b) Z_L = R_s
c) Z_L = jX_s
d) Z_L = R_s - jX_s

Answer:D

Solution:      https://www.youtube.com/watch?v=o9Awvha9eAg



2. The RC circuit shown in the figure is a

a) Low Pass Filter
b) High Pass Filter
c) Band Pass Filter
d) Band Reject Filter

Answer:C

Solution:    https://www.youtube.com/watch?v=0f9FRURijpw




3. Two series resonant filters are as shown in the figure. Let the 3-dB bandwidth of filter 1 is B₁ and that of Filter 2 is B₂. The value of B₁/B₂ is

a) 4
b) 1
c) 1/2
d) 1/4

Answer:D

Solution:    https://www.youtube.com/watch?v=lMKem0ESd64




4. For the circuit shown in the figure, the Thevenin's voltage and resistance looking into X-Y are

a) 4/3 volts. 2 Ω
b) 4 volts. 2/3 Ω
c) 4/3 volts. 2/3 Ω
d) 4/ volts. 2 Ω

Answer:D

Solution:     https://www.youtube.com/watch?v=M9_ZDSgAKLI




5. In the circuit shown, V_c is 0 volts at t = 0 sec. For t > 0, the capacitor current i_c(t), where t is in seconds, is given by

Answer:A

Solution:     https://www.youtube.com/watch?v=U9lh2d-zwTg




6. In the AC network shown in the figure, the phasor voltage V_AB(in volts) is:

Answer:D

Solution:    https://www.youtube.com/watch?v=CNz1YebFlDw