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 - 3
Question 1:
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
A. mV
B. µV
C. V
D. None of the above
Correct Answer – (B)
Question 2 :
The function of ferrite antenna is to ___________
A. Reduce stray capacitance
B. Stabilise d.c. bias
C. Increase the Q of tuned circuit
D. Reduce noise
A. Reduce stray capacitance
B. Stabilise d.c. bias
C. Increase the Q of tuned circuit
D. Reduce noise
Correct Answer – (C)
Question 3 :
In a radio receiver, noise is generally developed at ___________
A. IF stage
B. Receiving antenna
C. Audio stage
D. RF stage
A. IF stage
B. Receiving antenna
C. Audio stage
D. RF stage
Correct Answer – (D)
Question 4 :
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. Is increased
B. Remains the same
C. Is decreased
D. None of the above
Correct Answer – (B)
Question 5 :
The major advantage of FM over AM is ___________
A. Reception is less noisy
B. Higher carrier frequency
C. Smaller bandwidth
D. Small frequency deviation
A. Reception is less noisy
B. Higher carrier frequency
C. Smaller bandwidth
D. Small frequency deviation
Correct Answer – (A)
MCQ Questions Electrical Engineering Modulation and Demodulation
Question 6:
If Amin = 40 and Amax = 60, what is the percentage of modulation?
A. 20%
B. 40%
C. 50%
D. 10%
A. 20%
B. 40%
C. 50%
D. 10%
Correct Answer – (A)
Question 7:
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
A. Before the first RF stage
B. After the first RF stage
C. After several stages of amplification
D. None of the above
Correct Answer – (C)
Question 8:
Modulation refers to a low-frequency signal controlling the ___________
A. Amplitude of the carrier
B. Frequency of the carrier
C. Phase of the carrier
D. May be any of the above
A. Amplitude of the carrier
B. Frequency of the carrier
C. Phase of the carrier
D. May be any of the above
Correct Answer – (D)
Question 9:
In an AM wave, the majority of the power is in ___________
A. Lower sideband
B. Upper sideband
C. Carrier
D. None of the above
A. Lower sideband
B. Upper sideband
C. Carrier
D. None of the above
Correct Answer – (C)
Question 10:
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
A. 50 kW
B. 5 kW
C. 8 kW
D. 25 kW
Correct Answer – (A)
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