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GATE 2020: Topper's Quiz-3 (App update required to attempt this test)

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Question 1

Why SiO₂ layer is used in ICs?

Question 2

Which one of the following is a property of the solutions to the Laplace equation:

Question 3

A memory system of 128 K bytes need to be designed with RAM chips of 2 K bytes each and a decoder circuitry constructed with 1

2 decoder chips with “enable” input. The minimum number of a decoder chips required in a design are______.

Question 4

Consider an infinite length lossless transmission line with characteristic impedance

=50

.If the line is terminated with a load

=75

, then the ratio maximum input impedance to the minimum input impedance on the line is given by

Question 5

In a n-type gallium arsenide semiconductor at a temperature T = 300 k, the electron concentration varies linearly from 10¹⁶ to 10¹⁷ cm^–3 over a distance of 0.5cm. If the electron diffusion coefficient is D_n = 1250 cm²/s then the electron diffusion current density will be

Question 6

A sequential circuit using D flip-flop and logic gates is shown in the below figure, where X and Y are the inputs and Z is the output. The circuit is

Question 7

A class B push pull amplifier must deliver low of audio power to the output load. If the output transformer is 80% efficient then what is the minimum average dissipation rating required for each transistor ?

Question 8

If a vector field ‘V’ is related to another vector field