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# Test: Waveguide Current And Excitation

## 10 Questions MCQ Test Electromagnetic Theory | Test: Waveguide Current And Excitation

Description
This mock test of Test: Waveguide Current And Excitation for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam. This contains 10 Multiple Choice Questions for Electrical Engineering (EE) Test: Waveguide Current And Excitation (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Waveguide Current And Excitation quiz give you a good mix of easy questions and tough questions. Electrical Engineering (EE) students definitely take this Test: Waveguide Current And Excitation exercise for a better result in the exam. You can find other Test: Waveguide Current And Excitation extra questions, long questions & short questions for Electrical Engineering (EE) on EduRev as well by searching above.
QUESTION: 1

### The source voltage of a 75ohm transmission line is given by 150V. Find the load current.

Solution:

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

QUESTION: 2

### The guided terminations are used to

Solution:

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

QUESTION: 3

### Which type of wave does the resonant cavity produce?

Solution:

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

QUESTION: 4

Which of the following parameter cannot be calculated from the standing waves?

Solution:

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.

QUESTION: 5

For efficient transmission, the characteristic impedance of the transmission line has to be

Solution:

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

QUESTION: 6

The cavity resonators are used in the klystron amplifiers for

Solution:

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

QUESTION: 7

The cavity resonators used in the reflex klystron oscillators are for

Solution:

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

QUESTION: 8

One of the applications of the cavity resonators is duplexer in RADAR systems. State true/false.

Solution:

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

QUESTION: 9

Cavity wave meters are used to measure which parameter of the wave?

Solution:

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

QUESTION: 10

The waveguides are terminated by the procedure of

Solution: