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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
Marks 1Marks 2
Uniform Plane Waves
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1
GATE ECE 1996
MCQ (Single Correct Answer)
+2
-0.6
A transverse electromagnetic wave with circular polarization is received by a dipole antenna. Due to polarization mismatch, the power transfer efficiency from the wave to the antenna is reduced to about
A
50%
B
35.3%
C
25%
D
05
2
GATE ECE 1992
MCQ (Single Correct Answer)
+2
-0.6
The beam width-between-first-null of a uniform linear array of N equally-spaced (element spacing = d) equally-excited antennas is determined by
A
N alone and not by d
B
d alone and not by N
C
the ratio (N/d)
D
the product (Nd)
3
GATE ECE 1992
MCQ (Single Correct Answer)
+2
-0.6
Two dissimilar antennas having their maximum directivities equal
A
must have their beamwidths also equal
B
cannot have their beamwidths equal because they are dissimilar antennas
C
may not necessarily have their maximum power gains equal
D
must have their effective aperture areas (capture areas) also equal.
4
GATE ECE 1991
MCQ (Single Correct Answer)
+2
-0.6
In a board side array of 20 isotropic radiators, equally spaced at a distance of $$\lambda /2$$, the veam width between first nulls is
A
51.3 degrees
B
11.46 degrees
C
22.9 degrees
D
102.6 degrees
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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