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BARC 2018 ECE: Mini Mock 2

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Question 1

The transfer function of a phase-lead compensator is given by

The maximum phase-shift provided by such a compensator is:

Question 2

Consider the differential equation
Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE EC 10-Mar\GATE-ECE-2015-Paper-3_files\image099.png.
Given x(0) = 20 and x(1) = 10/e, where e = 2.718, the value of x(2) is ________.

Question 3

If each stage had gain of 10dB and noise figure of 10dB, then the overall noise figure of two-stage cascade amplifier will be

Question 4

If x and y are two random signals with zero mena Gaussina distribution having identical standard deviation, the phase angle between them is

Question 5

A transfer function G(s) has pole-zero plot as shown in the figure. the transfer function G(s) will be given by

      

Question 6

Calculate the value of feedback resistance (Rf) with R1 = 20 KΩ,  R2 = 10KΩ, Vo = 15V, Vi = 10V as given in the figure _____ (KΩ)


Question 7

Minimum number of bits required to represent maximum value of given analogue signal with 0.1% accuracy is:

Question 8

The effective resistance faced by the voltage source is :

Question 9

A standard air filled rectangular wave guide has a dimension for which a=2b, the cutoff frequency for TE02 mode is 12GHz, the cutoff frequency for TE01 mode is __________ GHz.

Question 10

The feedback configuration and the pole-zero locations of are shown below. The root locus for negative values of k, i.e. for –∞< k < 0, has breakaway/break in points and angle of departure at pole P (with respect to the positive real axis) equal to


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May 30ESE & GATE EC