2012
1. In the following figure, C1 and C2 are ideal capacitors. C1 has been charged to 12 volts before the ideal switch S is closed at t = 0. The current i(t) for all t is
a) zero
b) a step function
c) an exponentially decaying function
d) an impulse function
2. The average power delivered to an impedance (4-j3)Ω by a current 5cos(100πt+100) Amp is
a) 44.2 W
b) 50 W
c) 62.5 W
d) 125 W
3. The impedance looking into nodes 1 and 2 in the given circuit is
a) 50 Ω
b) 100 Ω
c) 5 kΩ
d) 10.1 kΩ
4. In the circuit shown below, the current through the inductor is
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
a) 0.8 Ω
b) 1.4 Ω
c) 2 Ω
d) 2.8 Ω
6. If VA - VB = 6 volts, then VC - VD is
a) - 5 volts
b) 2 volts
c) 3 volts
d) 6 volts
Common Data for Questions 48 and 49:
With 10 volts DC connected at port A in the linear nonreciprocal two-port network shown below,
(i) 1Ω connected at port B draws a current of 3 amps
(ii) 2.5Ω connected at port B draws a current of 2 amps
7. With 10 volts DC connected at port A, the current drawn by 7Ω connected at port B is
a) 3/7 A
b) 5/7 A
c) 1 A
d) 9/7 A
8. For the same network, with 6 volts DC connected at port A, 1Ω connected at port B draws 7/3 amp. If 8 volts DC is connected to port A, the open circuit voltage at port B is
a) 6 V
b) 7 V
c) 8 V
d) 9 V
Solution (7 & 8): https://www.youtube.com/watch?v=ghASFX3RYBA
Thanku so much sir..... 🙏
ReplyDelete