MCQ Questions Electrical Engineering Modulation And Demodulation
Take a look at these MCQ Questions Electrical Engineering Modulation and Demodulation for engineering interview questions and our tips on how to answer them. If you’re applying for an engineering internship, graduate scheme or entry-level job, you’ll face at least one interview as part of an engineering employer’s recruitment process. You may be interviewed by one or more members of the HR team, senior members of the engineering team you’d be joining or a mixture of both. In this section we will study MCQ Questions Electrical Engineering Modulation and Demodulation.
As well as questions about your reasons for applying to the role and the employer in question, engineering recruiters will be assessing your potential in the areas that is crucial to any engineering role: technical expertise. Engineers may be asked to perform feats of fantastic technical prowess, but it will be as as part of a Justice League rather than as a solo engineering super hero.
The interviewer is almost as nervous as the candidate in most interviews. You might wonder if you look confident enough, if you will hire the right person, or if you are asking the right engineering interview questions. The last question is arguably the most crucial part to worry about when you’re interviewing candidates.
MCQ Questions Electrical Engineering Modulation and Demodulation - Set - 4
Question 1:
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
A. 455 kHz
B. 1310 kHz
C. 1500 kHz
D. 1520 kHz
Correct Answer – (B)
Question 2 :
The letters AVC stand for ___________
A. Audio voltage control
B. Abrupt voltage control
C. Automatic volume control
D. Automatic voltage control
A. Audio voltage control
B. Abrupt voltage control
C. Automatic volume control
D. Automatic voltage control
Correct Answer – (C)
Question 3 :
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
A. IF and RF
B. RF and AF
C. IF and AF
D. RF and local oscillator signal
Correct Answer – (D)
Question 4 :
In a radio receiver, we generally use ___________ oscillator as a local oscillator
A. Crystal
B. Wien-bridge
C. Phase-shift
D. Hartley
A. Crystal
B. Wien-bridge
C. Phase-shift
D. Hartley
Correct Answer – (D)
Question 5 :
When the modulating signal controls the frequency of the carrier, we get___________
A. Phase modulation
B. Amplitude modulation
C. Frequency modulation
D. May be any one of the above
A. Phase modulation
B. Amplitude modulation
C. Frequency modulation
D. May be any one of the above
Correct Answer – (C)
MCQ Questions Electrical Engineering Modulation and Demodulation
Question 6:
In a TRF radio receiver, the RF and detection stages are tuned to ___________
A. Radio frequency
B. IF
C. Audio frequency
D. None of the above
A. Radio frequency
B. IF
C. Audio frequency
D. None of the above
Correct Answer – (A)
Question 7:
Overmodulation results in ___________
A. Weakening of the signal
B. Excessive carrier power
C. Distortion
D. None of the above
A. Weakening of the signal
B. Excessive carrier power
C. Distortion
D. None of the above
Correct Answer – (C)
Question 8:
In radio transmission, the medium of transmission is ___________
A. Space
B. An antenna
C. Cable
D. None of the above
A. Space
B. An antenna
C. Cable
D. None of the above
Correct Answer – (A)
Question 9:
In an AM wave useful power is carrier by ___________
A. Carrier
B. Sidebands
C. Both sidebands and carrier
D. None of the above
A. Carrier
B. Sidebands
C. Both sidebands and carrier
D. None of the above
Correct Answer – (B)
Question 10:
In India, ___________ modulation is used for radio transmission
A. Frequency
B. Amplitude
C. Phase
D. None of the above
A. Frequency
B. Amplitude
C. Phase
D. None of the above
Correct Answer – (B)
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