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GATE EC 2022: Communication System Quiz 6 (App update required to attempt this test)

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Question 1

For a 16 ary PSK signals having bit rate equal to 250 kbps the BW efficiency will be?

Question 2

Which one of the following circuits can be used for the purpose of de-emphasis?

Question 3

A dice is thrown 6 times. Getting even numbers is taken as success. The mean of the numbers is taken as success. The mean of the number of success ________(up to two decimal point)

Question 4

A Delta-Modulator has a 10 KHz sinusoidal signal with 1 Volt peak to peak at the input. It is sampled at 10 times the Nyquist rate. The step size required to prevent slope overload is _____mV.

Question 5

Consider a random variable ‘x’ having pdf given by

, otherwise

If random variable ‘y’ is generated such that . The value of is _______.

Question 6

Consider a discrete memory less source with symbols  with probabilities, respectively as shown below. Then the entropy H(Y) is _____bits/symbol.

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Nov 30ESE & GATE EC