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GATE EC 2020: Communication System Quiz 1

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Question 1

For a message signal and carrier of frequency fc, which of the following represents a signal side band (SSB) signal?

Question 2

Find the correct match between group 1 and group 2.

Question 3

A 70 kHz bandwidth is to accommodate 7 AM broadcast signals simultaneously. The maximum modulation frequency must each station be limited to _____ kHz. Assume that a guard band of 5 kHz is also present.

Question 4

A time domain energy signal is defined as with energy equal to 12 Joule then the energy of the signalis equal to

Question 5

An amplitude modulated signal is to be detected by envelope detector is given by
Description: Description: 08_Analog-Comm_BL-done_files\image044.pngThe value of capacitor, if the resistor used is 135 Ω is

Question 6

A sinusoidal carrier signal of 15V and 1 MHz frequency is amplitude modulated by a 5 kHz sinusoidal signal having amplitude of 4 V. the peak voltage of modulated signal, indicated on CRO screen will be
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Aug 21ESE & GATE EC