Electronics and Communication Engineering - Electromagnetic Field Theory

1. 

Television receiver antenna is usually

A. loop type
B. yagi antenna
C. parabolic dishes
D. none of the above

Answer: Option B

Explanation:

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2. 

In figure the current distribution is represented by

A. curve A
B. curve B
C. curve C
D. curve D

Answer: Option C

Explanation:

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3. 

Half power point directions for broadside is

A. 60°
B. 30°
C. 45°
D. at any angle

Answer: Option A

Explanation:

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4. 

What will happen to a bird sitting on a conductor?

A. It will die of shock
B. It will not die of shock because its claws are insulated
C. It will not die because it is insulated from earth and other conductors
D. None of the above

Answer: Option C

Explanation:

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5. 

Which one is correct option?

A. Phase velocity is greater than light velocity
B. Group velocity is greater than light velocity
C. Phase velocity is equal to group velocity
D. Phase velocity is less than light velocity

Answer: Option A

Explanation:

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