Modulation is done in____________________

Related Mcqs:

1. Over modulation results in ______________?

   A. Weakening of the signal
   B. Excessive carrier power
   C. Distortion
   D. None of the above

2. At 100% modulation, the power in each sideband is _____________ of that of carrier?

   A. 50%
   B. 40%
   C. 60%
   D. 25%

3. In amplitude modulation, bandwidth is ____________ the audio signal frequency?

   A. Thrice
   B. Four times
   C. Twice
   D. None of the above

4. In pakistan, ______________ modulation is used for radio transmission?

   A. Frequency
   B. Amplitude
   C. Phase
   D. None of the above

5. 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

6. If modulation is 100% then signal amplitude is ____________arrier amplitude?

   A. Equal to
   B. Greater than
   C. Less than
   D. None of the above

7. If level of modulation is increased ______________ power is increased?

   A. Carrier
   B. Sideband
   C. Carrier as well as sideband
   D. None of the above

8. 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

9. If Amin = 40 and Amax = 60, what is the percentage of modulation?

   A. 20 %
   B. 40 %
   C. 50 %
   D. 10 %

10. As the modulation level is increased, the carrier power__________________?

    A. Is increased
    B. Remains the same
    C. Is decreased
    D. None of the above