Practical Antennas – 1 – 2

6. An antenna with very high gain and very narrow beamwidth.

(a) helical antenna
(b) discone antenna
(c) horn antenna
(d) parabolic dish antenna

ANSWER
Answer : (d)

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

7. What is the radiation characteristic of a dipole antenna ?

(a) omnidirectional
(b) bidirectional
(c) unidirectional
(d) hemispherical

ANSWER
Answer : (b)

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

8.  An antenna which is one-tenth wavelength long.

(a) hertzian dipole
(b) loop antenna
(c) marconi antenna
(d) elementary doublet

ANSWER
Answer : (d)

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

9. ………. is an open-ended slot antenna.

(a) helical antenna
(b) rhombic antenna
(c) notch antenna
(d) cassegrain antenna

ANSWER
Answer : (c)

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

10. What is the gain of isotropic antenna ?

(a) 10
(b) 1
(c) 10
(d) 100

ANSWER
Answer : (b)

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

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