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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

With carrier frequency of 10⁵ Hz. The modulation index is

Question 4

An angle modulated signal is given by
$Description: Description: 08_Analog-Comm_BL-done_files\image053.png$ If 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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ESE & GATE EE Communication Systems

Jan 20ESE & GATE EE