1
GATE ECE 2013
+2
-0.6
The following arrangement consists of an ideal transformer and an attenuator which attenuates by a factor of 0.8. An ac voltage Vwx1 = 100V is applied across WX to get an open circuit voltage YZ1 V across YZ. Next, an ac voltage VYZ2 =100V is applied across YZ to get an open circuit voltage VWX2 across WX. Then, VYZ1 / VWX1 , VWX2 / VYZ2 are respectively, A
125 / 100 and 80 / 100
B
100 / 100 and 80 / 100
C
100 / 100 and 100 / 100
D
80 / 100 and 80 / 100
2
GATE ECE 2012
+2
-0.6
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
$$0.8\Omega$$
B
$$1.4\Omega$$
C
$$2\Omega$$
D
$$2.8\Omega$$
3
GATE ECE 2012
+2
-0.6
With 10 V dc connected at port A in the linear nonreciprocal two-port network shown below, the following were observed:
(i) 1Ω connected at port B draws a current of 3 A
(ii) 2.5Ω connected at port B draws a current of 2 A With 10 V 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
4
GATE ECE 2012
+2
-0.6
With 10 V dc connected at port A in the linear nonreciprocal two-port network shown below, the following were observed:
(i) 1Ω connected at port B draws a current of 3 A
(ii) 2.5Ω connected at port B draws a current of 2 A For the same network, with 6 V dc connected at port A, 1Ω connected at port B draws 7/3 A. If 8 V 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
GATE ECE Subjects
Network Theory
Control Systems
Electronic Devices and VLSI
Analog Circuits
Digital Circuits
Microprocessors
Signals and Systems
Communications
Electromagnetics
General Aptitude
Engineering Mathematics
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