Q1. Choose the correct answer (Answer any TEN): 1. In the spectrum of a square pulse, the first sidelobe ends at second finite zero crossing point, the third finite zero crossing point, the frequency of zero magnitude). 2. In Amplitude Modulation, the instantancous valucs of the carrier amplitude change in accordance with (the first finite zero crossing point, the (the amplitude variations of the modulating signal, the amplitude and frequency variations of the modulating signal, the amplitude of the carrier signal, the carrier frequency is fixed while the amplitude is changing). 3. What is the maximum carrier frequency to be used if the upper limit frequency that is available is 4000 Hz and the frequency of the modulating signal is 100 Hz? (4100 Hz, 4000 Hz, 3900 Hz, 400 Hz).
Q1. Choose the correct answer (Answer any TEN): 1. In the spectrum of a square pulse, the first sidelobe ends at second finite zero crossing point, the third finite zero crossing point, the frequency of zero magnitude). 2. In Amplitude Modulation, the instantancous valucs of the carrier amplitude change in accordance with (the first finite zero crossing point, the (the amplitude variations of the modulating signal, the amplitude and frequency variations of the modulating signal, the amplitude of the carrier signal, the carrier frequency is fixed while the amplitude is changing). 3. What is the maximum carrier frequency to be used if the upper limit frequency that is available is 4000 Hz and the frequency of the modulating signal is 100 Hz? (4100 Hz, 4000 Hz, 3900 Hz, 400 Hz).
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transcribed Image Text:Q1. Choose the correct answer (Answer any TEN):
1. In the spectrum of a square pulse, the first sidelobe ends at
second finite zero crossing point, the third finite zero crossing point, the frequency of zero magnitude).
2. In Amplitude Modulation, the instantancous values of the carrier amplitude change in accordance with
(the first finite zero crossing point, the
(the amplitude variations of the modulating signal, the amplitude and frequency variations of the
modulating signal, the amplitude of the carrier signal, the carrier frequency is fixed while the amplitude is
changing).
3. What is the maximum carrier frequency to be used if the upper limit frequency that is available is 4000 Hz and
the frequency of the modulating signal is 100 Hz? (4100 Hz, 4000 Hz, 3900 Hz, 400 Hz).
4. The narrow band filter in stereo receiver is used to detect the
(baseband signal spectrum, composite
signal spectrum, pilot signal, voltage control oscillator output signal).
5. The line connecting the positive and negative peaks of the carrier waveform is called
(Peak line, Maximum amplitude, Modulation index, Envelope)
6. What happens when the amplitude of the modulating signal is greater than the amplitude of the carrier? (Decay,
Distortion, Amplification, Attenuation).
7. Phase-locked loop can be used as.(FM demodulator, AM demodulator, FM receiver, AM receiver).
8. On which factor the bandwidth required for a modulated carrier depends? (baseband frequency range, signal to
noise ratio, carrier frequency, amplitude of carrier frequency).
9. Any signal can be expressed as the sum of possibly infinite, series of
and cosines, square waves).
10. What is the total power if the carrier power is 30W and the percentage of modulation is 85%? (70 W, 40.8 W,
51.6 W, 20 W).
11. The pilot carrier is an extra signal added to a modulated AM signal, to achieve
(asynchronous, synchronous, an efficient, reliable).
12. The signal is said to be
non-periodic, deterministic, energy).
(pulses, impulses, sines
modulation.
if it could be expressed mathematically as a function of time. (periodic,
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