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Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Test  >  Electromagnetics  >  Test: Waveguide Current & Excitation - Electronics and Communication Engineering (ECE) MCQ

Waveguide Current & Excitation - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Waveguide Current & Excitation (10 Questions)

You can prepare effectively for Electronics and Communication Engineering (ECE) Electromagnetics with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Waveguide Current & Excitation". These 10 questions have been designed by the experts with the latest curriculum of Electronics and Communication Engineering (ECE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Waveguide Current & Excitation - Question 1
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The source voltage of a 75ohm transmission line is given by 150V. Find the load current.

Detailed Solution: Question 1

Answer: b
Explanation: The load current is given by IL = VS/Z0. On substituting for VS = 150 and Z0 = 75, we get IL = 150/75= 2A.

Test: Waveguide Current & Excitation - Question 2
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The guided terminations are used to

Detailed Solution: Question 2

Answer: c
Explanation: The guided termination refers to the waveguide shorted by conducting plates. This is done in order to eliminate the reflection losses.

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Test: Waveguide Current & Excitation - Question 3
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Which type of wave does the resonant cavity produce?

Detailed Solution: Question 3

Answer: a
Explanation: Resonant cavity is the waveguide shorted by a conducting plate. This is to reduce the reflection losses. Such arrangement leads to standing waves.

Test: Waveguide Current & Excitation - Question 4
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Which of the following parameter cannot be calculated from the standing waves?

Detailed Solution: Question 4

Answer: d
Explanation: The peak voltage and current can be directly measured from the standing waves. The standing wave ratio, reflection coefficient and the transmission coefficient can also be calculated from it. Only the attenuation constant cannot be calculated directly.

Test: Waveguide Current & Excitation - Question 5
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For efficient transmission, the characteristic impedance of the transmission line has to be

Detailed Solution: Question 5

Answer: c
Explanation: Generally, for ideal transmission lines, the characteristic impedance should be either 50 ohm or 75 ohm.

Test: Waveguide Current & Excitation - Question 6
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The cavity resonators are used in the klystron amplifiers for

Detailed Solution: Question 6

Answer: b
Explanation: The cavity resonators are employed in the klystron amplifiers for amplifying the microwave signals.

Test: Waveguide Current & Excitation - Question 7
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The cavity resonators used in the reflex klystron oscillators are for

Detailed Solution: Question 7

Answer: b
Explanation: Oscillators are devices that generate signal waveforms. The reflex klystron oscillator is used to generate microwave signals.

Test: Waveguide Current & Excitation - Question 8
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One of the applications of the cavity resonators is duplexer in RADAR systems. State true/false.

Detailed Solution: Question 8

Answer: a
Explanation: Cavity resonator is used in duplexers of RADAR systems, as resonant cavity in transmit receive (TR) tubes and antitransmit receive (ART) tubes.

Test: Waveguide Current & Excitation - Question 9
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Cavity wave meters are used to measure which parameter of the wave?

Detailed Solution: Question 9

Answer: d
Explanation: Cavity resonators are used in cavity wave meters for the measurement of frequency of the microwave signals.

Test: Waveguide Current & Excitation - Question 10
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The waveguides are terminated by the procedure of

Detailed Solution: Question 10

Answer: c
Explanation: A waveguide is terminated by concept of tapered or exponential line and uses a dielectric having considerable conductivity to provide power absorbing properties. This will eliminate the reflection losses.

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About this Electronics and Communication Engineering (ECE) Practice Test

This test contains 10 MCQs on Waveguide Current & Excitation with detailed solutions for each question. It is part of the Electromagnetics course on EduRev, designed to align with the current Electronics and Communication Engineering (ECE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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