Related Mcqs:

1. The superhetrodyne principle provides selectivity at ______________stage?

   A. RF
   B. IF
   C. audio
   D. Before RF

2. In superhetrodyne receiver, the input at mixer stage is________________?

   A. IF and RF
   B. RF and AF
   C. IF and AF
   D. RF and local oscillator signal

3. 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

4. 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

5. 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

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

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

7. The IF is 455 kHz. If the radio receiver is tuned to 855 kHz, the local oscillator frequency is _______________?

   A. 455 kHz
   B. 1310 kHz
   C. 1500 kHz
   D. 1520 kHz

8. 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

9. In a radio receiver, we generally use ………….. oscillator as a local oscillator

   A. Crystal
   B. Wien-bridge
   C. Phase-shift
   D. Hartley

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