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Test: Electromagnetic Field Theory - 5 - Electronics and Communication Engineering (ECE) MCQ


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25 Questions MCQ Test Electromagnetics - Test: Electromagnetic Field Theory - 5

Test: Electromagnetic Field Theory - 5 for Electronics and Communication Engineering (ECE) 2024 is part of Electromagnetics preparation. The Test: Electromagnetic Field Theory - 5 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Electromagnetic Field Theory - 5 MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Electromagnetic Field Theory - 5 below.
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Test: Electromagnetic Field Theory - 5 - Question 1

Which one is correct option?

Test: Electromagnetic Field Theory - 5 - Question 2

A vertical loop antenna, like a horizontal dipole, is vertically polarised.

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Test: Electromagnetic Field Theory - 5 - Question 3

The attenuation in a waveguide near the cut off frequency is

Test: Electromagnetic Field Theory - 5 - Question 4

The electric flux and field intensity inside a conducting sphere is

Test: Electromagnetic Field Theory - 5 - Question 5

T.V. antennas are usually

Test: Electromagnetic Field Theory - 5 - Question 6

Measurement of radiation resistance by reflection method is suitable for

Test: Electromagnetic Field Theory - 5 - Question 7

A lossless transmission line is connected to two identical voltage source as shown in figure.

The impedance measured at the midpoint AA' is

Test: Electromagnetic Field Theory - 5 - Question 8

A loss less transmission line is terminated in a load which reflects a part of the incident power. The measured VSWR is 2. The percentage of the power that is reflected back is

Test: Electromagnetic Field Theory - 5 - Question 9

A higher directivity is specified by

Test: Electromagnetic Field Theory - 5 - Question 10

The best excited reflector from a wave guide is

Test: Electromagnetic Field Theory - 5 - Question 11

Long distance short-wave radio broadcasting uses

Test: Electromagnetic Field Theory - 5 - Question 12

The affect of ground on radiation pattern is to

Test: Electromagnetic Field Theory - 5 - Question 13

If a electromagnetic signal is incident at 0º in a waveguide then at other port of waveguide we will get

Test: Electromagnetic Field Theory - 5 - Question 14

An antenna having a high Q has

Test: Electromagnetic Field Theory - 5 - Question 15

The polarization of dielectric materials results in

Test: Electromagnetic Field Theory - 5 - Question 16

For a quarter wave transformer, characteristic impedance is related with input and load impedances as

Test: Electromagnetic Field Theory - 5 - Question 17

An electron when placed midway between two equal and opposite charges will

Test: Electromagnetic Field Theory - 5 - Question 18

Which of the following is the abnormal phenomena observed in the ionosphere?

Test: Electromagnetic Field Theory - 5 - Question 19

In a loss-less transmission line

Test: Electromagnetic Field Theory - 5 - Question 20

Which layer is least important in high frequency propagation?

Test: Electromagnetic Field Theory - 5 - Question 21

Which of the wave remains unaffected whether it is a day or night?

Test: Electromagnetic Field Theory - 5 - Question 22

Which of the following is not an omnidirectional antenna?

Test: Electromagnetic Field Theory - 5 - Question 23

The unit of magnetic flux density is

Test: Electromagnetic Field Theory - 5 - Question 24

In a waveguide if TE mode exist for z direction propagation, then

Test: Electromagnetic Field Theory - 5 - Question 25

Critical frequency of a layer in ionosphere

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