ExamSIDE
Questions (Powered by ExamGOAL)
Electromagnetics
Waveguides
Marks 1Marks 2Marks 5Marks 8Marks 10
Antennas
Marks 1Marks 2Marks 4Marks 5Marks 8Marks 10
Miscellaneous
Marks 1Marks 2
Transmission Lines
Marks 1Marks 2Marks 5Marks 10
Maxwell Equations
Marks 1Marks 2
Uniform Plane Waves
Marks 1Marks 2Marks 5Marks 8
Next
1
GATE ECE 2022
MCQ (More than One Correct Answer)
+2
-0

A waveguide consists of two infinite parallel plates (perfect conductors) at a separation of 10$$-$$4 cm, with air as the dielectric. Assume the speed of light in air to be 3 $$\times$$ 108 m/s. The frequency/frequencies of TM waves which can propagate in this waveguide is/are ___________.

A
6 $$\times$$ 1015 Hz
B
0.5 $$\times$$ 1012 Hz
C
8 $$\times$$ 1014 Hz
D
1 $$\times$$ 1013 Hz
2
GATE ECE 2017 Set 2
MCQ (Single Correct Answer)
+2
-0.6
Standard air filled rectangular waveguides of dimensions a = 2.29cm and b = 1.02cm are designed for radar applications. It is desired that these waveguides operate only in the dominant $$T{E_{10}}$$ mode with the operating frequency at least 25% above the cut-off frequency of the $$T{E_{10}}$$ mode but not higher than 95% of the next higher cutoff frequency. The range of the allowable operating frequency f is
A
$$8.19\,\,GHz\,\, \le \,\,f\,\, \le \,\,13.1\,\,GHz$$
B
$$8.19\,\,GHz\,\, \le \,\,f\,\, \le \,\,12.45\,\,GHz$$
C
$$6.55\,\,GHz\,\, \le \,\,f\,\, \le \,\,13.1\,\,GHz$$
D
$$1.64\,\,GHz\,\, \le \,\,f\,\, \le \,\,10.24\,\,GHz$$
3
GATE ECE 2016 Set 3
MCQ (Single Correct Answer)
+2
-0.6
Consider an air-filled rectangular waveguide with dimensions a = 2.286 cm and b = 1.016 cm. The increasing order of the cut-off frequencies for different modes is
A
$$T{E_{01}}\,\, < \,T{E_{10}}\, < \,T{E_{11}}\,\, < \,T{E_{20}}$$
B
$$T{E_{20}}\,\, < \,T{E_{11}}\, < \,T{E_{10}}\,\, < \,T{E_{01}}$$
C
$$T{E_{10}}\,\, < \,T{E_{20}}\, < \,T{E_{01}}\,\, < \,T{E_{11}}$$
D
$$T{E_{10}}\,\, < \,T{E_{11}}\, < \,T{E_{20}}\,\, < \,T{E_{01}}$$
4
GATE ECE 2016 Set 3
Numerical
+2
-0
Consider an air-filled rectangular waveguide with dimensions a = 2.286cm and b = 1.016cm. At 10GHz operating frequency, the value of the propagation constant (per meter) of the corresponding propagation mode is _____________________
Your input ____
Next
Questions Asked from Marks 2
GATE ECE 2022 (1) GATE ECE 2017 Set 2 (1) GATE ECE 2016 Set 3 (2) GATE ECE 2015 Set 2 (1) GATE ECE 2015 Set 1 (1) GATE ECE 2014 Set 2 (1) GATE ECE 2012 (1) GATE ECE 2008 (1) GATE ECE 2007 (2) GATE ECE 2006 (1) GATE ECE 2005 (1) GATE ECE 2003 (1) GATE ECE 2000 (1) GATE ECE 1993 (1) GATE ECE 1990 (1) GATE ECE 1988 (1) GATE ECE 1987 (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