Explore topic-wise MCQs in Microwave Engineering.

This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

In TE01 mode of wave propagation in a rectangular waveguide, if the smaller dimension of the waveguide is 2 cm, then the cutoff wavelength for that mode is:

A. 4 cm
B. 8 cm
C. 1 cm
D. 2 cm
Answer» B. 8 cm
Discussion
2.

In TE10 mode of wave propagation in a rectangular waveguide, if the broader dimension of the waveguide is 40 cm, then the cutoff wavelength for that mode is:

A. 8 cm
B. 6 cm
C. 4 cm
D. 2 cm
Answer» B. 6 cm
Discussion
3.

The cutoff frequency for the dominant mode in TM mode propagation for a rectangular waveguide of dimension of 30mm*40mm is:

A. 2 GHz
B. 1 GHz
C. 2 MHz
D. 4 MHz
Answer» B. 1 GHz
Discussion
4.

The lowest mode of TM wave propagation is:

A. TM10 mode
B. TM01 mode
C. TM11 mode
D. TM12 mode
Answer» D. TM12 mode
Discussion
5.

For dominant mode propagation in TE mode, if the rectangular waveguide has a broader dimension of 31.14 mm , then the cutoff wave number:

A. 100
B. 500
C. 50
D. 1000
Answer» B. 500
Discussion
6.

TEₒₒ mode for a rectangular waveguide:

A. Exists
B. Exists but defined only under special cases
C. Does not exist
D. Cannot be determined
Answer» D. Cannot be determined
Discussion
7.

For TE1ₒ mode, if the waveguide is filled with air and the broader dimension of the waveguide is 2 cm, then the cutoff frequency is:

A. 5 MHz
B. 7.5 MHz
C. 7.5 GHz
D. 5 GHz
Answer» D. 5 GHz
Discussion
8.

The modes of propagation supported by a rectangular wave guide is:

A. TM, TEM, TE modes
B. TM, TE
C. TM, TEM
D. TE, TEM
Answer» C. TM, TEM
Discussion
9.

THE_LOWEST_MODE_OF_TM_WAVE_PROPAGATION_IS:?$

A. TM10 mode
B. TM01 mode
C. TM11 mode
D. TM12 mode
Answer» D. TM12 mode
Discussion
10.

In TE10 mode of wave propagation in a rectangular waveguide, if the broader dimension of the waveguide is 40 cm, then the cutoff wavelength for that mode is:$

A. 8 cm
B. 6 cm
C. 4 cm
D. 2 cm
Answer» B. 6 cm
Discussion
11.

The cutoff frequency for the dominant mode in TM mode propagation for a rectangular waveguide of dimension of 30mm*40mm is:$

A. 2 GHz
B. 1 GHz
C. 2 MHz
D. 4 MHz
Answer» B. 1 GHz
Discussion
12.

In TE01 mode of wave propagation in a rectangular waveguide, if the smaller dimension of the waveguide is 2 cm, then the cutoff wavelength for that mode is:

A. 4 cm
B. 8 cm
C. 1 cm
D. 2 cm
Answer» B. 8 cm
Discussion
13.

For dominant mode propagation in TE mode, if the rectangular waveguide has a broader dimension of 31.14 mm , then the cutoff wave number?

A. 100
B. 500
C. 50
D. 1000
Answer» B. 500
Discussion
14.

TE‚Çí‚Çí mode for a rectangular waveguide:$

A. Exists
B. Exists but defined only under special cases
C. Does not exist
D. Cannot be determined
Answer» D. Cannot be determined
Discussion
15.

For TE1‚Çí mode, if the waveguide is filled with air and the broader dimension of the waveguide is 2 cm, then the cutoff frequency is:$

A. 5 MHz
B. 7.5 MHz
C. 7.5 GHz
D. 5 GHz
Answer» D. 5 GHz
Discussion
16.

Dominant mode is defined as:

A. Mode with the lowest cut off frequency
B. Mode with the highest cut off frequency
C. Any TEM mode is called a dominant mode
D. None of the mentioned
Answer» B. Mode with the highest cut off frequency
Discussion
17.

In TE mode of wave propagation in a rectangular waveguide, what is the equation that has to be satisfied?

A. (∂<sup>2</sup>/ ∂x<sup>2</sup> + ∂<sup>2</sup>/ ∂y<sup>2</sup>+ kC<sup>2</sup>).HZ(x, y) =0
B. (∂<sup>2</sup>/ ∂x<sup>2</sup> + ∂<sup>2</sup>/ ∂y<sup>2</sup>– kC<sup>2</sup>).HZ(x, y) =0
C. (∂<sup>2</sup>/ ∂x<sup>2</sup> – ∂<sup>2</sup>/ ∂y<sup>2</sup>+ kC<sup>2</sup>).HZ(x, y) =0
D. None of the mentioned
Answer» B. (‚Äö√Ñ√∂‚àö‚Ć‚àö√°<sup>2</sup>/ ‚Äö√Ñ√∂‚àö‚Ć‚àö√°x<sup>2</sup> + ‚Äö√Ñ√∂‚àö‚Ć‚àö√°<sup>2</sup>/ ‚Äö√Ñ√∂‚àö‚Ć‚àö√°y<sup>2</sup>‚Äö√Ñ√∂‚àö√ë‚àö¬® kC<sup>2</sup>).HZ(x, y) =0
Discussion
18.

For any mode of propagation in a rectangular waveguide, propagation occurs:

A. Above the cut off frequency
B. Below the cut off frequency
C. Only at the cut-off frequency
D. Depends on the dimension of the waveguide
Answer» B. Below the cut off frequency
Discussion
19.

A hollow rectangular waveguide cannot propagate TEM waves because:

A. Of the existence of only one conductor
B. Of the losses caused
C. It is dependent on the type of the material used
D. None of the mentioned
Answer» B. Of the losses caused
Discussion
20.

The modes of propagation supported by a rectangular wave guide is:

A. TM, TEM, TE modes
B. TM, TE
C. TM, TEM
D. TE, TEM
Answer» C. TM, TEM
Discussion