Electromagnetic Field Thoery - ECE Questions and Answers

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Which of the following statement is incorrect?

curl E = -μ jωE

None of the above

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High frequency waves are

absorbed by the F₂ layer

reflected by the D layer

affected by the solar cycle

none of the above

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The direction of vectors gives the direction of propagation of electromagnetic waves

Vector (E x H)

Vector (F x H)

Vector E

Vector H

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According to maximum power transfer theorem, the maximum power is absorbed by one network from another network when

the impedance of one of the networks is half that of the other

the impedance of one is the complex conjugate of the other

the impedance of one is equal to that of the other

none of the above

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A medium is divided into regions I and II about x = 0 plane, as shown in the figure below.
An EM wave with electric field is incident normally on the interface from region-I.
The electric field E₂ in region-II at the interface is

E₂ = E₁

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The static electric field in a conductor is

zero

unity

infinity

none of the above

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The propagation constant of a transmission line is

(R + jωL)(G + ωC)

none of the above

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In a perfect conductor the incident and reflected wave combine to produce

a stronger incident wave

a stronger reflected wave

a standing wave which is not progressing

none of the above

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MUF is highest in periods of greatest sunspot activity.

True

False