US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	12 meters
B	20 meters
C	30 meters
D	160 meters

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The IEEE
B	The Control Operator
C	The ITU
D	The FCC

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	56 kilobaud
B	1200 baud
C	19.6 kilobaud
D	300 baud

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	General only
B	Extra, General and Technician
C	Technician only
D	General and Technician

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The control operator of the interrogating station must hold an Extra Class license
B	The interrogating transmission must be made by another automatically controlled station
C	The station initiating the contact must be under local or remote control
D	No third party traffic maybe be transmitted

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is the only sideband legal on these frequency bands
B	Because it is fully compatible with an AM detector
C	Current amateur practice is to use lower sideband on these frequency bands
D	Lower sideband is more efficient than upper sideband at these frequencies

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When the President's War Emergency Powers have been invoked
B	Only when all amateur stations are instructed to stop transmitting
C	When they seize your equipment for use in disaster communications
D	When they declare a temporary state of communication emergency

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Closing station now
B	Operating full break-in
C	Listening for novice stations
D	Listening only for a specific station or stations

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a particular location
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows the angle at which an amateur satellite crosses the equator
D	A map that shows accurate land masses

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.150 - 14.225 MHz
B	14.070 - 14.100 MHz
C	14.000 - 14.050 MHz
D	14.275 - 14.350 MHz

11. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At the summer solstice
B	Only at the minimum point of the solar cycle
C	At any point in the solar cycle
D	Only at the maximum point of the solar cycle

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

Select	Answer
A	1,200 miles
B	2,500 miles
C	180 miles
D	12,000 miles

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Short-path skip
B	Faraday rotation
C	Scatter
D	Sporadic-E skip

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To restrict the transmitter voice bandwidth
B	To reduce interference from carriers in the receiver passband
C	To eliminate receiver interference from impulse noise sources
D	To enhance the reception of a specific frequency on a crowded band

15. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The transmitter balanced mixer output
B	The attenuated RF output of the transmitter
C	The local oscillator of the transmitter
D	An external RF oscillator

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	Bandpass tuning
B	A noise limiter
C	A Digital Signal Processor (DSP) filter
D	Balanced mixing

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz below the edge of the segment
B	At least 1 kHz above the edge of the segment
C	At least 3 kHz above the edge of the segment
D	Your displayed carrier frequency may be set at the edge of the segment

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode prevents self-discharge of the battery though the panel during times of low or no illumination
B	The diode serves to regulate the charging voltage to prevent overcharge
C	The diode greatly increases the efficiency during times of high illumination
D	The diode limits the current flowing from the panel to a safe value

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Siemens
B	Farad
C	Ohm
D	Ampere

20. - G5B14

What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?

Select	Answer
A	8.75 watts
B	5000 watts
C	2500 watts
D	625 watts

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	A capacitor in series
B	A capacitor in parallel
C	A resistor in series
D	An inductor in series

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's tolerance value would not be adequate for such a circuit
B	The resistor's inductance could make circuit performance unpredictable
C	The resistor could overheat
D	The resistor's internal capacitance would detune the circuit

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	DE-9
B	Type N
C	Type SMA
D	PL-259

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 7
B	Symbol 1
C	Symbol 6
D	Symbol 4

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	CW
B	All of these choices are correct
C	SSB
D	AM

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Wide tuning range and no need for band switching
B	Relatively low power consumption
C	Variable frequency with the stability of a crystal oscillator
D	Relatively high power output

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency conversion
B	Frequency transformation
C	Frequency modulation
D	Frequency convolution

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To allow time for the other station to break in during a transmission
B	Some modes have high duty cycles which could exceed the transmitter's average power rating.
C	All of these choices are correct
D	To aid in tuning your transmitter

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It requests a change in transmitting protocol
B	It sends the packet back to the transmitting station
C	It terminates the contact
D	It requests the packet be retransmitted

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	300 ohms
B	100 ohms
C	75 ohms
D	50 ohms

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Lengthen the radials
B	Slope the radials upward
C	Shorten the radials
D	Slope the radials downward

32. - G9C05

How does increasing boom length and adding directors affect a Yagi antenna?

Select	Answer
A	Front to back ratio decreases
B	Beamwidth increases
C	Front to side ratio decreases
D	Gain increases

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It allows simultaneous vertical and horizontal polarization
B	It allows quick selection of vertical or horizontal polarization
C	It narrows the main lobe in azimuth
D	It narrows the main lobe in elevation

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The total time of the exposure
B	The average amount of power developed by the transmitter over a specific 24 hour period
C	The average time it takes RF radiation to have any long-term effect on the body
D	The total RF exposure averaged over a certain time

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	Fuel should be stored near the generator for rapid refueling in case of an emergency
B	The generator must be insulated from ground
C	All of these choices are correct
D	The generator should be located in a well-ventilated area

Figure G7-1