GATE ECE format:nat PYQs & Answers — Page 12

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Questions 111–120 of 239. Imported answers require independent review unless marked reviewed.

Topic practice 239 questionsPage 12 of 24

In the circuit shown below, all the components are ideal. If

is +2 V, the current

sourced by the op-amp is ______ mA.

Diagram for Electronics and Communication Engineering question 18

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In an 8085 microprocessor, the number of address lines required to access a 16 K byte memory bank is ______.

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A 10-bit D/A converter is calibrated over the full range from 0 to 10 V. If the input to the D/A converter is 13A (in hex), the output (rounded off to three decimal places) is ______ V.

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A transmission line of length

and having a characteristic impedance of 50

is terminated with a load of 400

. The impedance (rounded off to two decimal places) seen at the input end of the transmission line is ______

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A binary random variable

takes the value +2 or −2. The probability

. The value of

(rounded off to one decimal place), for which the entropy of

is maximum, is ______.

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The loop transfer function of a negative feedback system is

The value of K, for which the system is marginally stable, is ______.

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The random variable

and

is a real white Gaussian noise process with two-sided power spectral density

W/Hz, for all

. The variance of Y is ______.

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The two sides of a fair coin are labelled as 0 and 1. The coin is tossed two times independently. Let

and

denote the labels corresponding to the outcomes of those tosses. For a random variable

, defined as

, the expected value

(rounded off to two decimal places) is ______.

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In the voltage regulator shown below, V_i is the unregulated input at 15 V. Assume V_BE = 0.7 V and the base current is negligible for both the BJTs. If the regulated output V_O is 9 V, the value of R₂ is ______ Ω.

Diagram for Electronics and Communication Engineering question 44

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The magnetic field of a uniform plane wave in vacuum is given by

The value of b is ______.

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GATE ECE format:nat PYQs

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25

Question 44

Question 45