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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 2005
MCQ (Single Correct Answer)
+2
-0.6
Two identical and parallel dipole antennas are kept apart by a distance $$\lambda /4$$ of in the H-plane. They are fed with equal currents but the right most antenna has a phase shift of +90°. The radiation pattern is given as
A
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 1
B
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 2
C
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 3
D
GATE ECE 2005 Electromagnetics - Antennas Question 37 English Option 4
2
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
Two identical antennas are placed in the $$\theta = \pi /2$$ plane as shown in figure. The elements have equal amplitude excitation with 180° polarity difference, operating at wavelength λ. The correct value of the magnitude of the far zone resultant electric field strength normalized with that of a single element, both computed for $$\phi = 0$$ is GATE ECE 2003 Electromagnetics - Antennas Question 38 English
A
$$2\,\cos \left( {{{2\,\pi s} \over \lambda }} \right)$$
B
$$2\,\sin \left( {{{2\,\pi s} \over \lambda }} \right)$$
C
$$2\,\cos \left( {{{\pi s} \over \lambda }} \right)$$
D
$$2\,\sin \left( {{{\pi s} \over \lambda }} \right)$$
3
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
A person with a receiver is 5 Km away from the transmitter. What is the distance that this person must move further to detect a 3-dB decrease in signal strength?
A
942 m
B
2070 m
C
4978 m
D
5320 m
4
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 $$\Omega $$
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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