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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 2008
MCQ (Single Correct Answer)
+1
-0.3
For a Hertz dipole antenna, the half power beam width (HPBW) in the E-plane is
A
$${360^ \circ }$$
B
$${180^ \circ }$$
C
$${90^ \circ }$$
D
$${45^ \circ }$$
2
GATE ECE 2006
MCQ (Single Correct Answer)
+1
-0.3
A transmission line is feeding 1 Watt of power to a horn antenna having gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free-space is
A
10 Watts
B
1 Watt
C
0.1 Watt
D
0.01 Watt
3
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
Refractive index of glass is 1.5. Find the wavelength of a beam of light with a frequency of $${10^{14}}$$ Hz in glass. Assume velocity of light is $$3\,\, \times \,{10^8}$$ m/s in vacuum.
A
3 $$\mu $$m
B
3mm
C
2 $$\mu $$m
D
1 $$\mu $$m
4
GATE ECE 2004
MCQ (Single Correct Answer)
+1
-0.3
Consider a lossless antenna with a directive gain of + 6 dB. If 1 m W of power is fed to it the total power radiated by the antenna will be
A
4 m W
B
1 m W
C
7 m W
D
1/4 m W
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Questions Asked from Marks 1
GATE ECE 2015 Set 3 (1) GATE ECE 2014 Set 4 (2) GATE ECE 2012 (1) GATE ECE 2008 (1) GATE ECE 2006 (1) GATE ECE 2005 (1) GATE ECE 2004 (1) GATE ECE 2002 (1) GATE ECE 2000 (1) GATE ECE 1998 (4) GATE ECE 1995 (1) GATE ECE 1994 (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