1
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
A rectangular waveguide having $$T{E_{10}}$$ mode as dominant mode is having a cutoff frequency of 18 GHz for the $$T{E_{30}}$$ mode. The inner broad-wall dimension of the rectangular waveguide is
A
5/3 cms
B
5 cms
C
5/2 cms
D
10 cms
2
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
Which one of the following does represent the electric field lines for the $$T{E_{02}}$$ mode in the cross-section of a hollow rectangular metallic waveguide?
A
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 1
B
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 2
C
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 3
D
GATE ECE 2005 Electromagnetics - Waveguides Question 29 English Option 4
3
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
A rectangular metal wave guide filled with a dielectric material of relative permittivity $${\varepsilon _r} = \,4$$ has the inside dimensions $$3.0\,cm\,\, \times \,\,1.2\,cm$$. The cut-off frequency for the dominant mode is
A
2.5 GHz
B
5.0 GHz
C
10.0 GHz
D
12.5 GHz
4
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
A rectangular waveguide has dimensions $$1\,\,cm\,\, \times \,\,0.5\,\,cm$$. Its cut-off frequency is
A
5 GHz
B
10 GHz
C
15 GHz
D
20 GHz
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