# Extra Class Exam Question Pool

effective 7/01/2016 thru 6/29/2020

 Show: Unseen questions Weak questions Review questions Learned questions Incorrect answer choices

2016-E9G: The Smith chart

2016-E9G01: Which of the following can be calculated using a Smith chart?

Impedance along transmission lines

2016-E9G02: What type of coordinate system is used in a Smith chart?

Resistance circles and reactance arcs

Voltage circles and current arcs

Voltage lines and current chords

Resistance lines and reactance chords

2016-E9G03: Which of the following is often determined using a Smith chart?

Impedance and SWR values in transmission lines

Satellite azimuth and elevation bearings

Trigonometric functions

2016-E9G04: What are the two families of circles and arcs that make up a Smith chart?

Resistance and reactance

Resistance and voltage

Reactance and voltage

Voltage and impedance

2016-E9G05: What type of chart is shown in Figure E9-3?

Smith chart

2016-E9G06: On the Smith chart shown in Figure E9-3, what is the name for the large outer circle on which the reactance arcs terminate?

Reactance axis

Prime axis

Impedance axis

Polar axis

2016-E9G07: On the Smith chart shown in Figure E9-3, what is the only straight line shown?

The resistance axis

The reactance axis

The current axis

The voltage axis

2016-E9G08: What is the process of normalization with regard to a Smith chart?

Reassigning impedance values with regard to the prime center

Reassigning resistance values with regard to the reactance axis

Reassigning reactance values with regard to the resistance axis

Reassigning prime center with regard to the reactance axis

2016-E9G09: What third family of circles is often added to a Smith chart during the process of solving problems?

Standing wave ratio circles

Antenna-length circles

Coaxial-length circles

2016-E9G10: What do the arcs on a Smith chart represent?

Points with constant reactance

Frequency

SWR

Points with constant resistance

2016-E9G11: How are the wavelength scales on a Smith chart calibrated?

In fractions of transmission line electrical wavelength

In fractions of transmission line electrical frequency

In fractions of antenna electrical wavelength

In fractions of antenna electrical frequency

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