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NEW Extra Class Exam Question Pool

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

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2016-E9G: The Smith chart

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

Impedance along transmission lines

Radiation resistance

Antenna radiation pattern

Radio propagation

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

Beam headings and radiation patterns

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

Free space radiation directivity chart

Elevation angle radiation pattern chart

Azimuth angle radiation pattern 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

Radiation-pattern circles

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

Points with constant reactance



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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Previous group:
2016-E9F: Transmission lines: characteristics of open and shorted feed lines; 1/8 wavelength; 1/4 wavelength; 1/2 wavelength; feed lines: coax versus open-wire; velocity factor; electrical length; coaxial cable dielectrics; velocity factor
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NEW Extra Class Exam Question Pool
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2016-E9H: Receiving Antennas: radio direction finding antennas; Beverage Antennas; specialized receiving antennas; longwire receiving antennas
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