1
GATE ECE 2004
+2
-0.6
Consider an impedance Z = R + jX marked with point P in an impedance Smith chart as shown in Fig. The movement from point P along a constant resistance circle in the clockwise direction by an angle $${45^ \circ }$$ is equivalent to A
adding an inductance in series with Z
B
adding a capacitance in series with Z
C
adding an inductance in shunt across Z
D
adding a capacitance in shunt across Z
2
GATE ECE 2004
+2
-0.6
A lossless transmission line is terminated in a load which reflects a part of the incident power. The measured VSWR is 2. The percentage of the power that is reflected back is
A
57.73
B
33.33
C
0.11
D
11.11
3
GATE ECE 2003
+2
-0.6
A short-circuited stub is shunt connected to a transmission line as shown in Fig. If $${Z_0} = 50\,\,\Omega$$, the admittance Y seen at the junction of the stub and the transmission line is A
(0.01 – j 0.02) mho
B
(0.02 – j 0.01) mho
C
(0.04 + j 0.02) mho
D
(0.02 + j 0) mho
4
GATE ECE 1999
+2
-0.6
In a twin-wire transmission line in air, the adjacent voltage maxima are at 12.5 cm and 27.5. The operating frequency is
A
300 MHz
B
1 GHz
C
2 GHz
D
6.28 GHz
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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