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Test: Transverse Electromagnetic Waves(TEM) - Electronics and Communication Engineering (ECE) MCQ


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10 Questions MCQ Test Electromagnetics - Test: Transverse Electromagnetic Waves(TEM)

Test: Transverse Electromagnetic Waves(TEM) for Electronics and Communication Engineering (ECE) 2024 is part of Electromagnetics preparation. The Test: Transverse Electromagnetic Waves(TEM) questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Transverse Electromagnetic Waves(TEM) 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: Transverse Electromagnetic Waves(TEM) below.
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Test: Transverse Electromagnetic Waves(TEM) - Question 1

In a transverse electric magnetic wave, which of the following will be true?

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 1

Answer: d
Explanation: In the transverse electric magnetic wave (TEM wave), both the electric and magnetic field strengths are transverse to the wave propagation.

Test: Transverse Electromagnetic Waves(TEM) - Question 2

The cut off frequency of the TEM wave is

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 2

Answer: a
Explanation: The TEM waves have both E and H perpendicular to the guide axis. Thus its cut off frequency is zero.

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Test: Transverse Electromagnetic Waves(TEM) - Question 3

Which component is non zero in a TEM wave?

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 3

Answer: a
Explanation: In a TEM wave, the wave propagates along the guided axis. Thus the components Ez and Hz are zero. The attenuation is also zero. The non-zero component will be Ex.

Test: Transverse Electromagnetic Waves(TEM) - Question 4

TEM wave can propagate in rectangular waveguides. State true/false.

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 4

Answer: b
Explanation: The rectangular waveguide does not allow the TEM wave. TEM mode can exist only in two conductor system and not in hollow waveguide in which the centre conductor does not exist.

Test: Transverse Electromagnetic Waves(TEM) - Question 5

The cut off wavelength in the TEM wave will be

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 5

Answer: c
Explanation: The cut off frequency in a TEM wave is zero. Thus the cut off wavelength will be infinity.

Test: Transverse Electromagnetic Waves(TEM) - Question 6

The guided wavelength of a TEM wave in a waveguide having a wavelength of 5 units is

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 6

Answer: c
Explanation: The guided wavelength is same as the wavelength of the waveguide with a TEM wave. Thus the guided wavelength is 5 units.

Test: Transverse Electromagnetic Waves(TEM) - Question 7

The guided phase constant of a TEM wave in a waveguide with a phase constant of 2.8 units is

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 7

Answer: a
Explanation: The guided phase constant is same as the phase constant of the waveguide. For the given data, the guided phase constant is 2.8 units.

Test: Transverse Electromagnetic Waves(TEM) - Question 8

Which type of transmission line accepts the TEM wave?

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 8

Answer: b
Explanation: Hollow transmission lines support TE and TM waves only. The TEM wave is possible only in the coaxial cable transmission line, which is not hollow.

Test: Transverse Electromagnetic Waves(TEM) - Question 9

For a TEM wave to propagate in a medium, the medium has to be

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 9

Answer: d
Explanation: The medium in which the TEM waves propagate has to be non- dispersive. This implies the phase velocity and the characteristic impedance has to be constant over a wide band.

Test: Transverse Electromagnetic Waves(TEM) - Question 10

Stripline and parallel plate waveguides support the TEM wave. State true/false. 

Detailed Solution for Test: Transverse Electromagnetic Waves(TEM) - Question 10

Answer: a
Explanation: The stripline and parallel plate waveguides are not hollow and the dielectric is lossless. The medium is non dispersive. Thus the statement is true.

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