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

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Communication Engineering Quiz

1. Channel bandwidth of each channel in GSM system is

A. 250 KHz
B. 200 KHz
C. 225 KHz
D. 175 KHz


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B. 200 KHz

2. Channel bandwidth of each channel in CDMA system is

A. 1050 KHz
B. 950 KHz
C. 1250 KHz
D. 850 KHz


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C. 1250 KHz

3. Multiple access technique used in GSM system is

A. T-FDMA
B. CDMA
C. FDMA
D. TDMA


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D. TDMA

4. The multiple access technology used in IS-95 system is

A. TDMA
B. CDMA
C. FDMA
D. None of above


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B. CDMA

5. Modulation technique used in GSM system is

A. FSK
B. ASK
C. GMSK
D. PSK


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C. GMSK

6. Modulation technique used in IS-95, CDMA system is

A. ASK
B. FSK
C. BPSK/QPSK
D. QAM


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C. BPSK/QPSK

7. Data Rate possible using GSM system is

A. 500 kbps
B. 700.833 Kbps
C. 933.833 kbps
D. 270.833 kbps


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D. 270.833 kbps

8. Data rate possible using IS-95 CDMA system is

A. 100 kbps
B. 200 kbps
C. 300 kbps
D. 9.6 to 14.4 kbps


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D. 9.6 to 14.4 kbps

9. One frame period in GSM system is

A. 19.615 ms
B. 12.615 ms
C. 4.615 ms
D. 8.615 ms


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C. 4.615 ms

10. One frame period in IS-95 CDMA system is

A. 60 ms
B. 20 ms
C. 40 ms
D. 80 ms


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B. 20 ms

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