Electronics and Communication Engineering - Electromagnetic Field Theory

1. 

Which one is correct option?

A. TEM mode exist in free space of infinite boundary
B. TEM mode exist in two conductor pattern system for finite-boundary
C. TEM mode exist in waveguide only
D. Both (a) and (b)

Answer: Option D

Explanation:

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2. 

A vertical loop antenna, like a horizontal dipole, is vertically polarised.

A. True
B. False

Answer: Option B

Explanation:

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3. 

The attenuation in a waveguide near the cut off frequency is

A. zero
B. low
C. high
D. very high

Answer: Option A

Explanation:

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4. 

The electric flux and field intensity inside a conducting sphere is

A. minimum
B. maximum
C. uniform
D. zero

Answer: Option D

Explanation:

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5. 

T.V. antennas are usually

A. Yagi-Uda
B. loops
C. helical
D. parabolic

Answer: Option A

Explanation:

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