Modulation is done in____________________
(A) Transmitter
(B) Radio receiver
(C) Between transmitter and radio receiver
(D) None of the above
In amplitude modulation, bandwidth is ____________ the audio signal frequency?
(A) Thrice
(B) Four times
(C) Twice
(D) None of the above
At 100% modulation, the power in each sideband is _____________ of that of carrier?
(A) 50%
(B) 40%
(C) 60%
(D) 25%
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
As the modulation level is increased, the carrier power__________________?
(A) Is increased
(B) Remains the same
(C) Is decreased
(D) None of the above
A high Q tuned circuit will permit an amplifier to have high __________________?
(A) Fidelity
(B) Frequency range
(C) Sensitivity
(D) Selectivity
Man made noise are______________ variations?
(A) Amplitude
(B) Frequency
(C) Phase
(D) Both phase and frequency
If level of modulation is increased ______________ power is increased?
(A) Carrier
(B) Sideband
(C) Carrier as well as sideband
(D) None of the above
Demodulation is done in ________________?
(A) Receiving antenna
(B) Transmitter
(C) Radio receiver
(D) Transmitting antenna
In radio transmission, the medium of transmission is ________________?
(A) Space
(B) An antenna
(C) Cable
(D) None of the above