# Extra Class Exam Question Pool

effective 7/01/2008 thru 6/30/2012

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

E9G: The Smith chart

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

Impedance along transmission lines

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

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

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

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

Smith chart

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

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

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

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

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

Points with constant reactance

Frequency

SWR

Points with constant resistance

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

 Color key: ● = Unseen ● = Weak ● = Review ● = Learned ● = Incorrect answer
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