ISRO ICRB Scientist/Engineer 'SC' Computer Science & Engineering ICRB Pattern

ISRO Scientist/Engineer CS Solved Papers

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989 Questions Page 28 of 40
676

The coupling between the two inductors is increased from 0 (zero) in the circuit shown. Which of the following statements is true?

RLCL / 20
ISRO Scientist/Engineer 'SC' Electronics 2010 Network Theory
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677

Write a Boolean expression for Z in terms of A, B, C, D and E. You need not simplify the expression.

V_SR_LZABCV_SR_LDE
ISRO Scientist/Engineer 'SC' Electronics 2010 Digital Electronics
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678

A parallel plate capacitor of 100 pF having an air dielectric is charged to 10 kilovolts. It is then electrically isolated. The plates are pulled away from each other until the distance is ten times more than before. Estimate the energy needed to pull the plates.

ISRO Scientist/Engineer 'SC' Electronics 2010 Electromagnetic Fields
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679

How could Schroedinger's equation be relevant in the practical design of a Cathode-Ray Tube?

ISRO Scientist/Engineer 'SC' Electronics 2010 Quantum Mechanics
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680

When compared with stripline, the major disadvantage of microstrip line is

ISRO Scientist/Engineer 'SC' Electronics 2010 Microwave Engineering
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681

The disadvantage of single-stub matching as compared to double-stub matching, is that

ISRO Scientist/Engineer 'SC' Electronics 2010 Microwave Engineering
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682

A charge $Q_{2} = 8.854 \times 10^{-9}\text{ C}$ is located in a vacuum at $P_{2}(2, 3, 1)$. The force on $Q_{2}$ due to a charge $Q_{1} = 4\pi \times 10^{-3}\text{ C}$ at $P_{1}(2, 2, 1)$ is

ISRO Scientist/Engineer 'SC' Electronics 2010 Electromagnetic Fields
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683

If a material contains $10^{20}\text{ molecules/m}^3$, each molecule having a moment of $8.854 \times 10^{-27}\text{ C}\cdot\text{m}$ parallel to an electric field of $10^{5}\text{ V/m}$, then its dielectric constant is

ISRO Scientist/Engineer 'SC' Electronics 2010 Electromagnetic Fields
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684

If every minor of order '$r$' of a matrix '$A$' is 0 (zero), then rank of '$A$' is

ISRO Scientist/Engineer 'SC' Electronics 2010 Engineering Mathematics
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685

Which of the following is true

ISRO Scientist/Engineer 'SC' Electronics 2010 Engineering Mathematics
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686

What is the maximum clock frequency at which following circuit can be operated without timing violations? Assume that the Combinational logic delay is 10 ns and the clock duty cycle varies from 40% to 60%.

DQDQCombinationalLogicClock
ISRO Scientist/Engineer 'SC' Electronics 2010 Digital Electronics
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687

Following shift register is initially loaded with the bit pattern "1010". After how many clock cycles will the content of shift register be "1010" again?

1010clockSerialinput
ISRO Scientist/Engineer 'SC' Electronics 2010 Digital Electronics
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688

Which one of the following is the lowest level of abstraction for representation of a digital system?

ISRO Scientist/Engineer 'SC' Electronics 2010 VLSI Design
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689

The content of the accumulator of 8085 microprocessor after execution of the following instructions will be

MVI A, A7h
ORA A
RLC
ISRO Scientist/Engineer 'SC' Electronics 2010 Microprocessors Interfacing
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690

For CMOS implementation of 2 input XOR logic gate, how many nMOS and pMOS transistors are required?

ISRO Scientist/Engineer 'SC' Electronics 2010 VLSI Design
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691

Which of the following principles is applied while designing the output matching network for a high power Class-C amplifier?

ISRO Scientist/Engineer 'SC' Electronics 2010 Analog Circuits
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692

Find the approximate output impedance of the VCCS (voltage-controlled current source) based circuit at port Vo.

VinVCCSg_m = 0.01SR_in = 10 MΩVccVo100 kΩ
ISRO Scientist/Engineer 'SC' Electronics 2010 Analog Circuits
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693

Which of the following parameters of a Silicon Schottky Diode is higher than that of a corresponding PN junction diode?

ISRO Scientist/Engineer 'SC' Electronics 2010 Electronic Devices
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694

Assume the intrinsic standoff ratio for the UJT is 0.8 for the relaxation oscillator circuit given below. The frequency of oscillation of this circuit is approximately equal to

R310kC10.1uFR1100 ohmUJTR239 ohms+-12Vdc
ISRO Scientist/Engineer 'SC' Electronics 2010 Analog Circuits
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695

The approximate frequency of oscillation of the circuit shown below is

15V5V1k1k10k10k0.01uF0.01uFQ2Q3
ISRO Scientist/Engineer 'SC' Electronics 2010 Analog Circuits
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696

A unit step voltage travels from left to right along an infinite transmission line. It hits an inductive discontinuity at $t=0$. What will be the waveform immediately to the left of the discontinuity?

ISRO Scientist/Engineer 'SC' Electronics 2010 Microwave Engineering
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697

A lossy open stub having a length of $1/32$ wavelength, is approximately equivalent to

ISRO Scientist/Engineer 'SC' Electronics 2010 Microwave Engineering
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698

Ampere's law relates

ISRO Scientist/Engineer 'SC' Electronics 2010 Electromagnetic Fields
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699

Across which type of boundary does the electric field have a continuous tangential component?

ISRO Scientist/Engineer 'SC' Electronics 2010 Electromagnetic Fields
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700

Laplace Transform of $e^{at}t^{n}$ is

ISRO Scientist/Engineer 'SC' Electronics 2010 Signals Systems
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