In amplitude modulation, the ___________ of carrier is varied according to the strength of the signal.

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

Modulation is done in ___________

A. Transmitter

B. Radio receiver

C. Between transmitter and radio receiver

D. None of the above

Demodulation is done in ___________

A. Receiving antenna

B. Transmitter

C. Radio receiver

D. Transmitting antenna

In the above question, what is the power in sidebands?

A. 8 kW

B. 6 kW

C. 06 kW

D. 9 kW