# Electronics and Communication Engineering - Microwave Communication

### Exercise :: Microwave Communication - Section 6

46.

The total power radiated from an antenna system is determined by imagining that the antenna is at the centre of a very large

 A. sphere B. rectangle C. square D. ellipse

Answer: Option A

Explanation:

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47.

The AM, PM, and TV broadcast frequencies are

 A. of the same order as microwave range B. much lower than microwave range C. much higher than microwave range D. either (a) or (c)

Answer: Option B

Explanation:

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48.

Assertion (A): For a reciprocal microwave junction the S matrix is symmetrical.

Reason (R): In a symmetrical matrix Sij = Sji.

 A. Both A and R are correct and R is correct explanation of A B. Both A and R are correct but R is not correct explanation of A C. A is correct but R is wrong D. A is wrong but R is correct

Answer: Option B

Explanation:

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49.

In TE mode of waveguide Ez = 0

 A. True B. False

Answer: Option A

Explanation:

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50.

The primary constants of a transmission line are

 A. R and L B. R, L and C C. R and C D. R, L, G and C

Answer: Option D

Explanation:

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