Fundamentals of Communication Engineering Quiz

1. Which of the following technique is used to convert triangular wave analog signal into a digital signal ?

A. PFM
B. PPM
C. PWM
D. ADPCM

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D. ADPCM

2. The trapezoidal display method of AM wave is used for _______________________.

A. Calculating modulating index
B. Calculating Amplification index
C. Calculating Quality factor index
D. All of the above

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A. Calculating modulating index

3. Modulation index is also known as ___________________.

A. Power factor
B. Quality factor
C. Modulation factor
D. Attenuator factor

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C. Modulation factor

4. Which of the following is the part of analog modulated receiver?

A. Analog modulator
B. Information source
C. Antenna system
D. All of the above

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D. All of the above

5. In phase modulation wish of the following properties of carrier wave are constant ?

A. Amplitude and Phase
B. Phase and Frequency
C. Frequency and Amplitude
D. Amplitude, Phase and Frequency

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C. Frequency and Amplitude

6. Which of the following is the type of digital continuous wave modulation used in digital communication?

A. BPSK
B. PWM
C. PFM
D. PM

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A. BPSK

7. AM wave will have no distortion for which of the following value of 'modulation index '?

A. m=0.95
B. m=1.1
C. m=1.2
D. m=1.5

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A. m=0.95

8. Modulation process is also called as __________________.

A. Frequency Attenuation process
B. Frequency Amplification process
C. Frequency Up-shifting process
D. Frequency Down-shifting process

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C. Frequency Up-shifting process

9. The analog cable TV distribution is an example of which of the following ?

A. Wired communication
B. Radio communication
C. Satellite communication
D. Microwave communication

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A. Wired communication

10. Which of the following media is useful in digital wired communication system ?

A. UTP cable
B. STP cable
C. Coaxial cable
D. All of the above

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D. All of the above