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BARC Full Syllabus Test 23

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Question 1

A cellular communication system is allocated with 1000 full duplex voice channels. If the service area is divided into 20 cells with a frequency reuse factor of 4, then the capacity of this cellular system is

Question 2

A message signal shown in below figure is applied to the AM modulator with modulation index 62%. If m(t) is a periodic signal then the modulation efficiency is

Question 3

What is the impulse response for the system indicated below?

Question 4

A TE₁₀ rectangular waveguide is to be designed for operation over 25-35 GHz and the band centre is 1.5 times the cutoff frequency. What should be the dimension of the broad side?

Question 5

The entropy of a digital source is 2.7 bits/symbol. It is producing 100 symbols per second. The source is likely to be which one of the following

Question 6

In broad side array 9 isotropic radiators are equally spaced at a distance of

The beam width between first nulls will be approximately

Question 7

Which type of oscillator circuit is shown in figure below?

Question 8

Determine the h-parameters of the given two-port network.

Question 9

In the system shown below, what is steady state error in unit ramp response?

Question 10

For the circuit diagram shown below, calculate the voltage across capacitor v(t) at t = 160 µsec?

Question 11

The content in accumulator after the execution of the following program is

MVI A, 69H

MVI B, 8AH

ADD B

DAA

Question 12

Given x(n) = 1, n = ± 1

= 2, n = ± 2

= 3, n = ± 3

= 0, otherwise

The number of nonzero samples in x(2n) are

Question 13

If a satellite is revolving in an orbit whose radius is 4 times the radius of geostationary orbit, then the time taken by the satellite to complete one revolution will be approximately equal to

Question 14

A sinusoidal signal with peak–to–peak amplitude of 1.536 V is quantized into 128 levels using a mid–rise uniform quantizer. The quantization noise power is

Question 15

In N silicon semiconductor, hole density decreases from 10¹⁴ cm^-3 - 10¹³ cm^-3 from x = 0 and x =

mm. What will be the hole diffusion current density if

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ESE & GATE EC General

Sep 18ESE & GATE EC