Test: Transients

# Test: Transients

Test Description

## 10 Questions MCQ Test Electromagnetic Fields Theory (EMFT) | Test: Transients

Test: Transients for Electrical Engineering (EE) 2023 is part of Electromagnetic Fields Theory (EMFT) preparation. The Test: Transients questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Transients MCQs are made for Electrical Engineering (EE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Transients below.
Solutions of Test: Transients questions in English are available as part of our Electromagnetic Fields Theory (EMFT) for Electrical Engineering (EE) & Test: Transients solutions in Hindi for Electromagnetic Fields Theory (EMFT) course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: Transients | 10 questions in 10 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Electromagnetic Fields Theory (EMFT) for Electrical Engineering (EE) Exam | Download free PDF with solutions
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Test: Transients - Question 1

### The resonant circuit in a waveguide refers to the

Detailed Solution for Test: Transients - Question 1

Explanation: The resonant circuit refers to the tank circuit. It is parallel combination of an inductor and a capacitor.

Test: Transients - Question 2

### When a waveguide is terminated, the mode of the guided termination will be

Detailed Solution for Test: Transients - Question 2

Explanation: A waveguide mode with a guided termination is represented by TEmnp and TMmnp. Here m and n are the orders of the waveguide and p is the order of the resonant cavity. It is always a non-zero value.

Test: Transients - Question 3

### The cut off frequency of a waveguide with resonant cavity is given by

Detailed Solution for Test: Transients - Question 3

Explanation: The cut off frequency of the waveguide of dimensions a x b with the resonant cavity of dimension d is given by fc = √((m/a)2 + (n/b)2 + (p/d)2)/2. Here m and n are the orders of the waveguide, p is the order of the cavity and v is the velocity

Test: Transients - Question 4

The power of a wave in a transmission line, when the current and the resistance are 5A and 120 ohm respectively is

Detailed Solution for Test: Transients - Question 4

Explanation: The power of a line is given by P = I2R. On substituting for I = 5 and R = 120, we get P = 52 x 120 = 3000 units.

Test: Transients - Question 5

The power of a wave having a magnetic field intensity of 2.5 units is

Detailed Solution for Test: Transients - Question 5

Explanation: The power of a wave is given by P = 0.5 η H2, where η is the intrinsic impedance and H is the magnetic field intensity. On substituting for η = 377 and H = 2.5, we get P = 0.5 x 377 x 2.52 = 1.17 kilo watts.

Test: Transients - Question 6

The power of a wave having an electric field strength of 12.8 units is

Detailed Solution for Test: Transients - Question 6

Explanation: The power of a wave is given by P = 0.5 E2/η, where E is the electric field intensity and η is the intrinsic impedance. On substituting for E = 12.8 and η = 377, we get P = 0.5 x 12.82/377 = 0.217 units.

Test: Transients - Question 7

The form or mode of propagation is determined by which factors?

Detailed Solution for Test: Transients - Question 7

Explanation: The form and the mode of propagation of the wave in a waveguide is determined by the type and location of the excitation device.

Test: Transients - Question 8

The phase of the wave after the installation of the guided terminations will be

Detailed Solution for Test: Transients - Question 8

Explanation: Using a guided termination, the guides serves as a reflector. If the distance between the exciter and the wall is properly adjusted, the transmitted and the reflected wave will be in phase.

Test: Transients - Question 9

The exciter of the waveguide in a transmission line is the

Detailed Solution for Test: Transients - Question 9

Explanation: The waveguide is usually excited by the antenna rod. The reflection depends on the phase of excitation and the antenna current

Test: Transients - Question 10

A waveguide imitates which type of filter characteristics?

Detailed Solution for Test: Transients - Question 10

Explanation: A waveguide passes only high frequency waves (in GHz range) and attenuates low frequencies. This is the characteristic of a high pass filter.

## Electromagnetic Fields Theory (EMFT)

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