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Electronics and Communication Engineering - Microwave Communication

Exercise : Microwave Communication - Section 6
21.
What is the numerical aperture an optical fiber when critical angle is 30°?
0.5
0.704
0.866
0.2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
A line of length slightly less than and short circuited at far end behaves as
inductance L
capacitance C
L and C in series
L and C in parallel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
In TE10 mode of rectangular waveguide
there is one half sine wave variation along x direction and one along y direction
there is one half sine wave variation along y direction and one along x direction
there is one full sine wave variation along x direction and one along y direction
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Reflection from the object to be measured is significant only when the wavelength is
much bigger than the size of object
much smaller than the size of object
almost of the size of object
either (a) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The speed at which axial electric field due to signal advances in a TWT is equal to
speed of light
(speed of light) (helix pitch helix circumference)
(speed of light) (helix circumference helix pitch)
(speed of light) (helix pitch) (helix circumference)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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