GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 665 - 669 of 1076

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Question 665

Question

MCQ▾

Indicate which one of the following modes do NOT exist in a rectangular resonant cavity

Choices

Choice (4)Response

a.

b.

c.

d.

Question 666

Question

MCQ▾

A rectangular waveguide has dimensions . Its cut off frequency is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 667

Question

MCQ▾

An air – filled rectangular waveguide of internal dimension a has a cut off frequency of for the dominant mode. For the same waveguide, if the cutoff frequency of the mode is , the frequency of the mode is ________

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question 668

Question

MCQ▾

The modes of rectangular waveguide are denoted by when m and n are Eigen numbers along the larger and smaller dimensions of the waveguide respectively. Which one of the following statement is true.

Choices

Choice (4)Response

a.

The mode of waveguide does not exist.

b.

The mode of waveguide does not exist.

c.

The and modes both exist and have same cut off frequency.

d.

The and modes both exist and have same cut off frequency

Question 669

Question

MCQ▾

A rectangular waveguide of internal dimensions is to be operated in mode. The minimum operating frequency is

Choices

Choice (4)Response

a.

b.

c.

d.

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