In a transmitter ____________oscillator is used?

Related Mcqs:

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

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

2. 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

3. The signal voltage induced in the aerial of a radio receiver is of the order of ________________?

   A. mV
   B. µV
   C. V
   D. None of the above

4. In a radio receiver, noise is generally developed at _______________?

   A. IF stage
   B. Receiving antenna
   C. Audio stage
   D. RF stage

5. A high Q tuned circuit will permit an amplifier to have high __________________?

   A. Fidelity
   B. Frequency range
   C. Sensitivity
   D. Selectivity

6. The letters AVC stand for ________________?

   A. Audio voltage control
   B. Abrupt voltage control
   C. Automatic volume control
   D. Automatic voltage control

7. 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

8. Most of the amplification in a superhetrodyne receiver occurs at ______________stage?

   A. IF
   B. RF amplifier
   C. Audio amplifier
   D. Detector

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

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

10. The diode detector in an AM radio receiver is usually found _____________?

    A. Before the first RF stage
    B. After the first RF stage
    C. After several stages of amplification
    D. None of the above