Amplitude Modulation – 1 – 2

6. When signal amplitude is equal to the amplitude of the carrier, the percentage modulation factor will be :

(a) 25
(b) 50
(c) 100
(d) 200

ANSWER

EXPLANATION

7. Amplitude modulation issued for broadcasting because as compared to other system :

(a) It can provide the necessary bandwidth for high fidelity
(b) It requires less transmitting power
(c) It use avoids receiver complexity
(d) It is more immune to noise

ANSWER

EXPLANATION

8. One can provide two or more voice circuits on the same carrier by using :

(a) DSB-SC
(b) SSB with pilot carrier
(c) ISB systems
(d) SSB-BC system

ANSWER

EXPLANATION

9. For a given carrier wave maximum undistorted power is transmitted when value of modulation is :

(a) 0
(b) 0.5
(c) 0.8
(d) 1.0

ANSWER

EXPLANATION

10. A SSB (signal-side band) signal contains 3 k.W. the power content of the carrier is :

(a) 0 kW
(b) 1 kW
(c) 2 kW
(d) 3 kW

ANSWER

EXPLANATION

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