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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	4005 kHz
B	1875 kHz
C	3750 kHz
D	3900 kHz

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	At any time, as long as it produces no spurious emissions
B	When it is unintentionally transmitted from the background at the transmitter
C	When it is an incidental part of a manned space craft retransmission
D	When it is transmitted on frequencies above 1215 MHz

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	Possession of a properly obtained telegraphy license
B	An FCC General Class or higher license and VEC accreditation
C	Notification to the FCC that you want to give an examination
D	Receipt of a CSCE for General Class

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	Under no circumstances
B	When under automatic control
C	When messages are encrypted
D	When messages are not encrypted

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	A distress call
B	The caller is looking for any station outside their own country
C	A general call for any station
D	The caller is listening for a station in Germany

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Report the interference to your local Amateur Auxiliary Coordinator
B	As a common courtesy, move your contact to another frequency
C	Increase power to overcome interference
D	Tell the interfering stations to change frequency

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Report was read from an S meter rather than estimated
B	Key clicks
C	Chirpy or unstable signal
D	100 percent copy

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	Call sign of station contacted and the signal report given
B	Date and time of contact
C	Band and/or frequency of the contact
D	All of these choices are correct

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Transmit UI packets several times and wait to see if there is a response from another PACTOR station
C	Put the modem or controller in a mode which allows monitoring communications without a connection
D	Send the message: "Is this frequency in use?"

11. - G3A05

What is the solar flux index?

Select	Answer
A	Another name for the American sunspot number
B	A measure of solar radiation at 10.7 centimeters wavelength
C	A measure of the highest frequency that is useful for ionospheric propagation between two points on the Earth
D	A count of sunspots which is adjusted for solar emissions

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just below the MUF
B	Select a frequency just above the critical frequency
C	Select a frequency just below the critical frequency
D	Select a frequency just above the LUF

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

14. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To reduce distortion due to excessive drive
B	To increase overall efficiency
C	To balance the transmitter audio frequency response
D	To reduce harmonic radiation

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When adjusting tuned circuits
B	When testing logic circuits
C	When high precision is desired
D	When measuring the frequency of an oscillator

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Use a ground loop for best conductivity
B	Install a few ferrite beads on the ground wire where it connects to your station
C	Install an RF filter in series with the ground wire
D	Connect all equipment grounds together

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 10 times less powerful
B	It is 20 times less powerful
C	It is 20 times more powerful
D	It is 100 times more powerful

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

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Insert an LC network between the two circuits
B	Reduce the power output of the first circuit
C	Insert a circulator between the two circuits
D	Increase the power output of the first circuit

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It is the sum of the reciprocal of each individual voltage drop
B	It equals the average of each branch current
C	It decreases as more parallel branches are added to the circuit
D	It equals the sum of the currents through each branch

21. - G5C07

What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?

Select	Answer
A	24.4 to 1
B	300 to 1
C	150 to 1
D	12.2 to 1

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

Select	Answer
A	Much less leakage than any other type
B	Tight tolerance
C	Inexpensive RF capacitor
D	High capacitance for a given volume

23. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Mode Modulated Integrated Circuit
C	Multi Megabyte Integrated Circuit
D	Military Manufactured Integrated Circuit

24. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 1
B	Symbol 11
C	Symbol 6
D	Symbol 7

25. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is low when either or both inputs are high
B	Output is high when either or both inputs are low
C	Output is low only when both inputs are high
D	Output is high only when both inputs are high

26. - G7C05

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

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

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	Signal distortion caused by excessive drive
B	The transmitter's carrier is properly suppressed
C	The transmitter's automatic level control (ALC) is properly adjusted
D	Signal distortion caused by insufficient collector current

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	5 kHz
C	16 kHz
D	3 kHz

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By controlling transmitter output power for optimum signal strength
B	By using the varicode character set
C	By using a parity bit with each character
D	By transmitting redundant information with the data

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	1:2
B	2:1
C	1:4
D	4:1

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Shorter Radials
B	Lower ground reflection losses
C	Lower feed point impedance
D	Lower radiation resistance

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The direction of maximum radiated field strength from the antenna
B	The magnitude of the maximum vertical angle of radiation
C	The point of maximum current in a radiating antenna element
D	The maximum voltage standing wave point on a radiating element

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A broad-band mobile antenna
B	A vertical antenna
C	A helical antenna for space reception
D	A very long and low directional receiving antenna

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Ensure that you and the antenna structure are grounded
B	Wear a radiation badge
C	All of these choices are correct
D	Turn off the transmitter and disconnect the feed line

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	All of these choices are correct
B	Never lean back and rely on the belt alone to support your weight
C	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life
D	Ensure that all heavy tools are securely fastened to the belt D-ring

Figure G7-1