Detection of AM Waves MCQ’s

This set of Analog Communication Multiple Choice Questions & Answers (MCQs) focuses on “Detection of AM Waves”.

1. Most commonly used modulation system for telegraphy is ________
a) Multi-tone modulation
b) Single tone modulation
c) PCM
d) FSK

2. What do you understand by the term “carrier”?
a) waveform with constant frequency, phase and amplitude
b) waveform for which frequency, amplitude or phase is varied
c) waveform with high amplitude, low frequency and constant phase
d) waveform to be transmitted

3. Detection is same as ________
a) Modulation
b) Mixing
c) Filtering
d) Demodulation

4. According to Fourier analysis, square wave can be represented as ________
a) fundamental sine wave and even harmonics
b) fundamental sine wave and odd harmonics
c) fundamental sine wave and harmonics
d) fundamental and sub harmonic sine wave

5. Mass of any moving system is represented by ________
a) a resistance
b) a conductance
c) a resistivity
d) an inductance

6. Bandwidth of RF amplifier for a color TV receiver is ________
a) equal to channel width
b) more than channel width
c) less than channel width
d) twice of channel width

7. PDM is generated by ________
a) Bistable multivibrator
b) Monostable multivibrator
c) Astable multivibrator
d) Schmitt trigger

8. Contrast function in TV is done by ________
a) Luminance amplifier
b) Schmitt trigger
c) Band Pass Filter
d) Chroma amplifier

9. FSK system involves ________
a) frequency modulation
b) pulse modulation
c) amplitude modulation
d) phase modulation

10. Diameter of antenna is doubled. The maximum range will ________
a) be doubled
b) be halved
c) become four times
d) decrease to one fourth

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