Antenna Terminology – 1 – 2

6. ………… is the horizontal pointing angle of an antenna.

(a) azimuth
(b) angle of elevation
(c) right angle
(d) beamwidth

Answer
Answer : (a)

Explanation
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7. How will you increase the gain of an antenna ?

(a) by adding several antennas in parallel
(b) by focusing the radiated energy in one desired direction
(c) by making antenna rods thicker
(d) by making the antenna size larger

Answer
Answer : (b)

Explanation
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8. …………. of an antenna is a measure of how the antenna concentrates its radiated power in a given direction.

(a) efficiency
(b) power
(c) gain
(d) polarization

Answer
Answer : (c)

Explanation
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9. What is the front-to-back ratio of an antenna which radiates 500 watts in a northernly direction and 50 watts in a southernly direction ?

(a) 25000 dB
(b) 10 dB
(c) 100 dB
(d) 20 dB

Answer
Answer : (b)

Explanation
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10. If the radiated power increase 10.89 times, the antenna current increases by ………… ?

(a) 3.3 times
(b) 6.6 times
(c) 1.82 times
(d) 10.89 times

Answer
Answer : (a)

Explanation
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