GATE ECE 2017 Paper 2 — page 8

Questions 22–24 of 65. Imported answers require review unless explicitly marked reviewed.

Consider the random process

where

is a zero-mean Gaussian random variable and

is a random variable uniformly distributed between 0 and 2. Assume that

and

are statistically independent. The mean value of the random process at

is __________

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A sinusoidal message signal is converted to a PCM signal using a uniform quantizer. The required signal-to-quantization noise ratio (SQN) at the output of the quantizer is 40 dB. The minimum number of bits per sample needed to achieve the desired SQN is __________

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Two conducting spheres S1 and S2 of radii

and

(

) respectively, are placed far apart and connected by a long, thin conducting wire, as shown in the figure.

Diagram for Electronics and Communication Engineering question 24

For some charge placed on this structure, the potential and surface electric field on S1 are

and

, and that on S2 are

and

, respectively. Then, which of the following is CORRECT?

Your answerChoose one option.

and

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2017 · Paper 2

Question 22

Question 23

Question 24