Digital Communication System MCQs
Practice free Digital Communication System multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 252 questions — no login required.
Question 100easy
The process in which the signal is first compressed before modulation and expanded after demodulation so as to allow the use of a uniform quantising rate is known as
Question 101easy
The value of a resistor is doubled. The thermal noise power generated by this resistor is
Question 102easy
One of the following parameters is not useful for comparing the noise performance of receivers
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Question 103easy
One of the following types of noise assumes importance at high frequencies
Question 104easy
One of the following statements is wrong regarding modulation.
Question 105easy
Optical communication uses the frequency range of
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Question 106easy
In a fiber optic communication link, the source to fiber coupling efficiency is dependent on
Question 107easy
The type of sourcemodulation required for digital communication using a fiber optic link set up is
Question 108easy
For a one kilometer length of step index multimode fiber with n1 = 1.5 and A = 0.01, assuming that the information carrying capacity is limited just by the intermodal dispersion, the minimum inter-pulse separation for the transmitted bit stream would be