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GATE 2022 Toppers Quiz 4
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Question 1
Consider the digital filter as shown in figure
Given K = 2 and input is . The output of the system is, then the value of A is ……….
Question 2
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 Dn = 1250 cm2/s then the electron diffusion current density will be
Question 3
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 4
The distribution function fx(x) of a random variable X is shown in Figure. the probability that X = 1 is
Question 5
Feedback control system is shown in figure below.
The phase margin of the system is _____
Question 6
The switch in the circuit, shown in the figure, was open for a long time and is closed at t = 0.
The current i(t) (in ampere) at t = 0.5 seconds is ________
The current i(t) (in ampere) at t = 0.5 seconds is ________
Question 7
A straight line is fit to a data set (ln x, y). This line intercepts the abscissa at ln x = 0.1 and has a slope of −0.02. What is the value of y at x = 5 from the fit?
Question 8
Consider P-type silicon in MOS structure. The surface potential that result in maximum space charge width is –0.412 V. Then the semiconductor doping is ____ × 1013/cm3
(Assume ni = 1.5 × 1010/cm3, T = 300°k)
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ESE & GATE ECGeneralApr 28ESE & GATE EC