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ESE 2021 Technical Quiz || Analog communication: Modulation and de-modulation

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Question 1

A 1 MHz sinusoidal carrier is amplitude modulated by a symmetrical square wave of provide 100 μ sec. Which of the following frequencies will not be present in the modulated signal?

Question 2

In time division multiplexing, the noise contribution of PM detector as compare to FM detector is

Question 3

Consider the frequency modulated signal 10 cos[2π × 105t + 5 sin(2π × 1500t) + 7.5 sin(2π × 1000t)]
With carrier frequency of 105 Hz. The modulation index is

Question 4

An angle modulated signal is given by
Description: Description: 08_Analog-Comm_BL-done_files\image053.pngIf V(t) is a FM signal with frequency sensitivity of 17 Hz/V, the modulating signal m(t) is

Question 5

13 single each is band limited to 7 kHz are to be transmitted over a single channel. If AM DSB modulation technique is used and the guard band of 1.5 kHz is present then the bandwidth of the multiplexed signal is ________kHz.
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Mohd. IrshadMohd. IrshadMember since Apr 2020
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