Electronics and Communication Engineering - Microwave Communication

6. 

In rectangular waveguides the ratio of width to height is about

A. 0.5
B. 1
C. 2
D. 4

Answer: Option C

Explanation:

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7. 

If wavelength in free space is λ0 wavelength in insulator λ, μr is relative permittivity or insulator and ∈r is relative permittivity or insulator, then

A.
B.
C.
D.

Answer: Option B

Explanation:

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8. 

In the given figure the circuits for input impedance of a microwave device with output ports match terminated. The device is

A. E plane tee
B. H plane tee
C. magic tee
D. hybrid ring

Answer: Option D

Explanation:

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9. 

Which of these statements is correct?

A. Ridge guide is essentially a form of capacitively loaded guide.
B. Ridge guide is essentially a form of inductively loaded guide.
C. Ridge guide is essentially a form of resistively loaded guide.
D. Ridge guide has higher power handling capacity than rectangular waveguide.

Answer: Option A

Explanation:

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10. 

A rectangular waveguide has width a. Then at the cutoff frequency (with corresponding wave length λc)

A.
B. a = λc
C.
D. a = 2λc

Answer: Option A

Explanation:

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