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ECE Board Reviewer - Circuits

Authored by Yvan Review

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ECE Board Reviewer - Circuits
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30 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes the function of a transmission line?

To guide electromagnetic waves from one point to another

To amplify signals during transmission

To convert analog signals to digital

To modulate carrier waves

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the characteristic impedance of a typical coaxial cable used in RF transmission?

50 ohms

75 ohms

100 ohms

25 ohms

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which phenomenon causes signal distortion due to different frequency components traveling at different speeds?

Dispersion

Reflection

Attenuation

Impedance mismatch

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A standing wave ratio (SWR) of 1:1 indicates what condition on a transmission line?

Perfect impedance matching

Open circuit

Short circuit

Maximum power loss

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The loss of signal strength during transmission is known as:

Attenuation

Reflection

Dispersion

Radiation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Velocity factor of a transmission line is defined as:

Ratio of the signal speed in the line to the speed of light

Signal speed times the dielectric constant

Speed of light divided by signal frequency

Impedance of the line divided by resistance

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quarter-wave transformers are used for:

Impedance matching

Signal amplification

Noise suppression

Voltage regulation

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