GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 820 - 823 of 1076

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Question 820

Appeared in Year: 2016

Question

MCQ▾

Consider a square matrix

,

Where x is unknown. If the eigenvalues of the matrix A are and , then is equal to

Choices

Choice (4)Response

a.

b.

c.

d.

Question 821

Entropy, Mutual Information and Channel Capacity Theorem

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

Question 822

QAM, MAP and ML Decoding

Appeared in Year: 2016

Question

Numeric Answer▾

An ideal band pass channel is deployed for communication. A modem is designed to transmit bits at the rate of using 16 QAM. The roll-off factor of a pulse with a raised cosine spectrum that utilizes the entire frequency band is …

Question 823

Appeared in Year: 2019

Question

Numeric Answer▾

Consider the signal where t is in seconds. Its fundamental time period, in seconds, is ________. (Carry One Mark Each)

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