Communications-Information Theory [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 1 - 3 of 10

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Question 1

Appeared in Year: 2014

Question MCQ▾

Arrange the following communication systems in increasing order of their available commercial bandwidth: (June)

1. Satellite Communication System

2. Amplitude Modulated System

3. Frequency Modulated System

4. Two-line transmission system

Correct sequence is

Choices

Choice (4)Response

a.

4,3, 2,1

b.

1,3, 2,4

c.

4,2, 3,1

d.

1,2, 3,4

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Question 2

Appeared in Year: 2017

Question MCQ▾

Consider a wireless communication link between a transmitter and a receiver located in free space, with finite and strictly positive capacity. If the effective areas of the transmitter and the receiver antennas, and the distance between them are all doubled, and everything else remains unchanged, the maximum capacity of the wireless link

Choices

Choice (4)Response

a.

Decreases by a factor of 2

b.

Increases by a factor of 2

c.

Decrease by a factor of

d.

Remains unchanged

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Question 3

Appeared in Year: 2016

Question Numeric Answer▾

A binary communication system makes use of the symbol “zero” and “one” . There are channel errors. Consider the following events:

The following probabilities are given: and . The information in bits that you obtain when you learn which symbol has been received (while you know that a “zero” has been transmitted) is …

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