A. Amplitude of the carrier
B. Frequency of the carrier
C. Phase of the carrier
D. May be any of the above
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Related Mcqs:
- In amplitude modulation, bandwidth is ____________ the audio signal frequency?
- A. Thrice B. Four times C. Twice D. None of the above...
- In amplitude modulation, the _____________of carrier is varied according to the strength of the signal?
- A. Amplitude B. Frequency C. Phase D. None of the above...
- If modulation is 100% then signal amplitude is ____________arrier amplitude?
- A. Equal to B. Greater than C. Less than D. None of the above...
- A 100 V carrier is made to vary between 160 V and 40 V by the signal. What is the modulation factor ?
- A. 3 B. 6 C. 5 D. None of the above...
- When the modulating signal controls the frequency of the carrier, we get______________?
- A. Phase modulation B. Amplitude modulation C. Frequency modulation D. May be any one of the above...
- In a superhetrodyne receiver, the difference frequency is chosen as the IF rather than the sum frequency because _________________?
- A. The difference frequency is closer to oscillator frequency B. Lower frequencies are easier to amplify C. Only the difference frequency can be modulated D. None of the above...
- The signal voltage induced in the aerial of a radio receiver is of the order of ________________?
- A. mV B. ยตV C. V D. None of the above...
- If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ________________?
- A. Sensitivity B. Selectivity C. Distortion D. Fidelity...
- At 100% modulation, the power in each sideband is _____________ of that of carrier?
- A. 50% B. 40% C. 60% D. 25%...
- If Amin = 40 and Amax = 60, what is the percentage of modulation?
- A. 20 % B. 40 % C. 50 % D. 10 %...
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