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BARC Full Syllabus Test 24

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Question 1

The figure shows an RLC circuit with a sinusoidal current source.

At resonance, the ratio|IL|/|IR|, i.e., the ratio of the magnitudes of the inductor current phasor and the resistor current phasor, is___

Question 2

The force on a point charge + q kept at a distance d from the surface of an infinite grounded metal plate in a medium of permittivity is

Question 3

A fibre-optic cable has the indices of refraction of core of 1.6 and of cladding of 1.4. For an angle of incidence 700, the angle of return light ray will be

Question 4

A second order system has closed loop transfer function

. If the system is initially at rest and subjected to a unit step input at t = 0, the third peak (third overshoot) in the response will occur at

Question 5

Find ID(Q) of the MOSFET whose VT=4V, ID (on) = 5 mA at VGS (on) = 8V and VGS(Q) = 6.9V.

Question 6

Find the relative permittivity of dielectric material used in parallel plate capacitor if electric flux density D = 15 µC/m2 and energy density is 20 J/m3.

Question 7

For the events A & B to be independent the probability that both occur is and probability that neither of them occur is .Then the probability of occurrence of A is

Question 8

The inverse Laplace transform of the function

is

Question 9

Consider an N-MOS transistor shown in the circuit below:

The N-MOS transistor is so constructed that it has , the threshold voltage VT = 1.2 V and λ = 0, then the value of voltage VDS is equal to

Question 10

Consider a binary transmission system with the symbol waveforms , . This modulation format is termed as

Question 11

IN an assembly language program it is written to mask RST 6.5 & unmask RST 5.5 & RST 7.5 as

MVI A, (X)H

SIM

The value of X will be

Question 12

The open loop transfer function of a unity feedback control system is . Determine the range of gain ‘K’ for the unity feedback control system to be stable.

Question 13

What is the impulse response for the system indicated below?

Question 14

A superhetrodyne receiver is to operate in 450kHz – 1550kHz, with intermediate frequency 450 kHz. The value of  is

Question 15

The width of Hysteresis curve of Schmitt trigger shown below will be:

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Sep 19ESE & GATE EC