Electronics and Communication Engineering - Microwave Communication

16. 

In microwave detector used in laboratory measurements of relative power levels, standing wave ratio is about

A. 0.1
B. 1.25
C. 5
D. 10

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

17. 

Microwaves

A. get reflected by ionosphere
B. are absorbed by ionosphere
C. are neither reflected nor absorbed by ionosphere
D. are both reflected and absorbed by ionosphere

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

18. 

In microstrip line has dielectric material most commonly used is

A. silicon
B. rubber
C. plastic
D. bakelite

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

19. 

In fibre optics the use is made of thin glass fibres for efficient transmission of light.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

20. 

Fields are said to be circularly polarized if

A. their magnitudes are equal
B. their magnitudes are equal and they differ in phase by ± 90°
C. their magnitudes are unequal and they differ in phase ± 90°
D. their magnitudes are unequal and they are in phase

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.