Q. A 1 kW carrier is Amplitude Modulated to a depth of 60%. The total power in the modulated carrier is ?
✅ Correct Answer: (D)
1.18 kW
Communication Engineering MCQs | Page - 52
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Q. A carrier is modulated by two modulating waves A and B having modulation index of 0.6 and 0.8 respectively. The overall modulation index is ?
✅ Correct Answer: (A)
1.0
Q. An AM signal with a carrier of 6KW produces a modulation of 100% what will be the power produced in each side band ?
✅ Correct Answer: (D)
1.5KW
Q. The modulation index of an amplitude modulated wave is changed from 0 to 1. The transmitted power is ?
✅ Correct Answer: (C)
Increased by 50 percent
Q. In amplitude modulated system if the total power is 600W and the power in the carrier is 400W, the modulation index ?
✅ Correct Answer: (D)
1
Q. The ratio of modulating power to total power at 100% modulation will be ?
✅ Correct Answer: (C)
1:3
Q. Before transmission message signal is modulated with carrier signal for : ?
✅ Correct Answer: (A)
Decreasing the height of transmitting antenna
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