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Exam Details

ISRO Electrical Engineering 2020

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Questions 80
Duration 180 mins
Package ESE & GATE EE - Previous Year Papers

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Difficulty distribution

Medium 50 62.5%
Hard 25 31.3%
Easy 5 6.3%

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Multiple Choices 80 100%

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Sample questions from this paper

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1
2020 · Unclassified
ISRO Electrical Engineering 2020
A 50 MHz uniform plane wave is propagating in a material with relative permeability and relative permittivity as 2.25 and 1 respectively. The material is assumed to be lossless. Find the phase constant of the wave propagation.
A
ϖ rad/m
B
ϖ/4 rad/m
C
ϖ/2 rad/m
D
2ϖ rad/m
2
2020 · Unclassified
ISRO Electrical Engineering 2020
A non-magnetic lossy dielectric material with relative permittivity εr = 2.25 and conductivity σ = 10-4 mho/m is applied with electromagnetic wave of 2.5 MHz. What is the loss tangent ?
A
0.32
B
11.11
C
None of the above
D
3.13
3
2020 · Unclassified
ISRO Electrical Engineering 2020
A solid conductor with relative permeability µr = 200, conductivity σ = 5 x 106 mho/m having outer diameter of 8 mm and length of 2 mm. If the total current carried by the conductor is i(t) = 2 cos(ϖ104t) A. find the skin depth.
A
2.25 mm
B
0.225 mm
C
1.60 mm
D
0.16 mm
4
2020 · Unclassified
ISRO Electrical Engineering 2020
A uniform plane wave at the boundary of an overhead transmission line and underground cable has reflection coefficient: . The standing wave ratio is
A
B
C
D
5
2020 · Unclassified
ISRO Electrical Engineering 2020
Working principle of thermocouple is
A
Seeback effect
B
Faraday’s law
C
None of the above
D
Hall effect
6
2020 · Unclassified
ISRO Electrical Engineering 2020
Which of the following represents a stable system?
A
Impulse response of the system increases exponentially.
B
Area within the impulse response is infinite.
C
Roots of the characteristics equation of the system are real and negative.
D
None of the above