In pakistan, ______________ modulation is used for radio transmission?

Related Mcqs:

1. In radio transmission, the medium of transmission is ________________?

   A. Space
   B. An antenna
   C. Cable
   D. None of the above

2. Over modulation results in ______________?

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

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

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

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

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

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

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

6. Modulation is done in____________________

   A. Transmitter
   B. Radio receiver
   C. Between transmitter and radio receiver
   D. None of the above

7. 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

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

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

9. A 50 kW carrier is to be amplitude modulated to a level of 85%. What is the carrier power after modulation ?

   A. 50 kW
   B. 5 kW
   C. 8 kW
   D. 25 kW

10. Modulation refers to a low-frequency signal controlling the ________________?

    A. Amplitude of the carrier
    B. Frequency of the carrier
    C. Phase of the carrier
    D. May be any of the above