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Electrical Engineering Mcqs — Test 79

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Question 1
Man made noise are______________ variations?
Question 2
A high Q tuned circuit will permit an amplifier to have high __________________?
Question 3
As the modulation level is increased, the carrier power__________________?
Question 4
A 50 kW carrier is to be amplitude modulated to a level of 85%. What is the carrier power after modulation ?
Question 5
In a radio receiver, we generally use ………….. oscillator as a local oscillator
Question 6
If Amin = 40 and Amax = 60, what is the percentage of modulation?
Question 7
A 100 V carrier is made to vary between 160 V and 40 V by the signal. What is the modulation factor ?
Question 8
The function of ferrite antenna is to_________________?
Question 9
The IF is 455 kHz. If the radio receiver is tuned to 855 kHz, the local oscillator frequency is _______________?
Question 10
When the modulating signal controls the frequency of the carrier, we get______________?