Electrical Engineering (EE) Exam > Electrical Engineering (EE) Tests > Topicwise Question Bank for Electrical Engineering > Test: Electromagnetic Waves - 1 - Electrical Engineering (EE) MCQ
Test: Electromagnetic Waves - 1 - Electrical Engineering (EE) MCQ
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Test: Electromagnetic Waves - 1 - Question 1
Consider the following statements associated with an electromagnetic wave in free space:
- At every point in space, the electric field
and th emagnetic vector field 
are perpendicular to each other and to the direction of propagation.
- Velocity of propagation of wave in free space is equal to
oscillate in phase opposition and the ratio of their amplitude is constant being equal to 
- Whatever may be the frequency , the electromagnetic wave travels in space with velocity of light.
Which of the above statements are correct?
and th emagnetic vector field are perpendicular to each other and to the direction of propagation. oscillate in phase opposition and the ratio of their amplitude is constant being equal to
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 1
= speed of light (3 x 108 m/s). Hence statement-2 is not correct.
oscillate in phase and the ratio of their amplitude is constant being equal to 
. Hence, statement-3 is not correct.
Test: Electromagnetic Waves - 1 - Question 2
Intrinsic impedance or charcteristic impedance of the non-conducting medium in the free space is
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 2
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Test: Electromagnetic Waves - 1 - Question 3
If the magnitude of 
in a plane wave is 1 V/m, what is the magnitude of H for a plane wave in free space?
in a plane wave is 1 V/m, what is the magnitude of H for a plane wave in free space?
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 3
Test: Electromagnetic Waves - 1 - Question 4
What is the velocity of a plane wave in a lossless medium having a relative permittivity of 5 and relative permeability of unity?
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Test: Electromagnetic Waves - 1 - Question 5
A plane wave in free space has an average Poynting vector of 1 Wm-2. The average energy density is
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 5
Test: Electromagnetic Waves - 1 - Question 6
Infree space 
are respectively given by 
and 
The value of β and H0 are respectively
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 6
Test: Electromagnetic Waves - 1 - Question 7
In a homogeneous non-conducting region where 
The value of ∈r and ω are
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 7
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 8
we can find that direction of propagation is +z.
must also lie in a + z direction, A must have the direction 
Test: Electromagnetic Waves - 1 - Question 9
Assertion (A): Uniform plane electromagnetic waves are transverse in nature.
Reason (R): Uniform plane electromagnetic
waves have components of 
only in direction perpendicular to the direction of propagation and not in the direction of propagation.
Test: Electromagnetic Waves - 1 - Question 10
Assertion (A): The term 
is sometimes referred to the loss tangent.
Reason (R): The two vectors Jc (conduction current density) and Jd (displacement current density) are 180° out of phase and are in the opposite direction in space.
Detailed Solution for Test: Electromagnetic Waves - 1 - Question 10
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