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Electromagnetics
Waveguides
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Antennas
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Miscellaneous
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Transmission Lines
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Maxwell Equations
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Uniform Plane Waves
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1
GATE ECE 2001
MCQ (Single Correct Answer)
+2
-0.6
A medium wave radio transmitter operating at a wavelength of 492 m has a tower antenna of height 124m. What is the radiation resistance of the antenna?
A
25 $$\Omega $$
B
36.5 $$\Omega $$
C
50 $$\Omega $$
D
73 $$\Omega $$
2
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
For an 8 feet (2.4 m) parabolic disk antenna operating at 4 GHz, the minimum distance required for far field measurement is closest to
A
7.5 cm
B
15 cm
C
15 m
D
150 m
3
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
The half-power beam widths (HPBW) of an antenna in the two orthogonal planes are $${100^ \circ }$$ and $${60^ \circ }$$ respectively. The directivity of the antenna is approximately equal to
A
2 db
B
5 db
C
8 db
D
12 db
4
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
A transmitting antenna radiates 251 W isotropically. A receiving antenna, located 100m away from the transmitting antenna, has an effective aperture of 500 cm2. The total power received by the antenna is
A
10 nW
B
1 $$\mu $$ W
C
20 $$\mu $$ W
D
100 $$\mu $$ W
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Questions Asked from Marks 2
GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 1 (3) GATE ECE 2015 Set 2 (1) GATE ECE 2008 (1) GATE ECE 2007 (1) GATE ECE 2006 (1) GATE ECE 2005 (1) GATE ECE 2003 (1) GATE ECE 2002 (1) GATE ECE 2001 (2) GATE ECE 2000 (2) GATE ECE 1999 (1) GATE ECE 1997 (1) GATE ECE 1996 (2) GATE ECE 1992 (2) GATE ECE 1991 (1) GATE ECE 1990 (1) GATE ECE 1989 (1) GATE ECE 1988 (1)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics