US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It cools body tissue
B	It heats body tissue
C	It causes radiation poisoning
D	It causes the blood count to reach a dangerously low level

2. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut down the unit if it becomes too hot
B	To shut off the power supply if too much voltage is produced
C	To prevent unauthorized changes to the circuit that would void the manufacturer’s warranty
D	To ensure that dangerous voltages are removed if the cabinet is opened

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	28.000 MHz to 28.025 MHz only
B	28.000 MHz to 28.300 MHz only
C	The entire band
D	28.025 MHz to 28.300 MHz only

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	They are limited to those expressly listed in Part 97 of the FCC rules
B	They are not permitted
C	They may be used if they do not obscure the meaning of a message
D	Only “Q” signals are permitted

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	2.8 kHz
B	1.8 kHz
C	3 kHz
D	5.6 kHz

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	None, only Amateur Extra class licensees may be accredited
B	General and Technician
C	Technician only
D	Amateur Extra, General, and Technician

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
B	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands
C	On any band segment where digital operation is permitted
D	Only in the non-phone Extra Class segments of the bands

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Any stations outside the lower 48 states
B	Any caller is welcome to respond
C	Only stations in Germany
D	Only contest stations

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	1 kHz to 3 kHz
B	3 kHz to 6 kHz
C	150 Hz to 500 Hz
D	5 Hz to 50 Hz

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you operating full break-in?” or “Can you operate full break-in?”
B	“Will you keep the frequency clear?”
C	“Are you busy?” or “Is this frequency in use?”
D	“Are you listening only for a specific station?”

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To provide emergency and public safety communications
B	To coordinate repeaters for efficient and orderly spectrum usage
C	To encourage amateur radio operators to self-regulate and comply with the rules
D	To conduct efficient and orderly amateur licensing examinations

12. - G2E08

In what segment of the 20-meter band are most digital mode operations commonly found?

Select	Answer
A	At the bottom of the slow-scan TV segment, near 14.230 MHz
B	In the middle of the CW segment, near 14.100 MHz
C	Between 14.070 MHz and 14.100 MHz
D	At the top of the SSB phone segment, near 14.325 MHz

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Rotation of the Sun’s surface layers around its axis
B	Long term oscillations in the upper atmosphere
C	Cyclic variation in Earth’s radiation belts
D	The position of the Moon in its orbit

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	A slightly delayed echo might be heard
B	The signal might be cancelled causing severe attenuation
C	Signal strength increased by 3 dB
D	Periodic fading approximately every 10 seconds

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

Select	Answer
A	The E region
B	The D region
C	The F1 region
D	The F2 region

16. - G4A11

Why should the ALC system be inactive when transmitting AFSK data signals?

Select	Answer
A	ALC will invert the modulation of the AFSK mode
B	All these choices are correct
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	The ALC action distorts the signal

17. - 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 local oscillator of the transmitter
B	An external RF oscillator
C	The transmitter balanced mixer output
D	The attenuated RF output of the transmitter

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It prevents signal overload
B	It prevents a blown fuse in the event of an internal short circuit
C	It ensures that hazardous voltages cannot appear on the chassis
D	It ensures that the neutral wire is grounded

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.175 MHz to 7.178 MHz
B	7.178 MHz to 7.184 MHz
C	7.1765 MHz to 7.1795 MHz
D	7.178 MHz to 7.181 MHz

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	Ground the solar panel outer metal framework
B	Ensure the battery is placed terminals-up
C	A series resistor must be in place
D	The solar panel must have a charge controller

21. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the amplitude of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency of the applied AC increases, the reactance decreases

22. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The peak value
B	The RMS value
C	The reciprocal of the RMS value
D	The peak-to-peak value

23. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

Select	Answer
A	80 ohms
B	0.17 ohms
C	5.9 ohms
D	17 ohms

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

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

25. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Reverse biased
B	Forward biased
C	In the tunnel-effect region
D	At the Zener voltage

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 7
B	Symbol 2
C	Symbol 11
D	Symbol 1

27. - G7B06

What is a shift register?

Select	Answer
A	An analog mixer
B	A digital mixer
C	An array of operational amplifiers used for tri-state arithmetic operations
D	A clocked array of circuits that passes data in steps along the array

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

Select	Answer
A	Carrier oscillator
B	Filter
C	IF amplifier
D	RF amplifier

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase modulation
B	Phase transformation
C	Phase convolution
D	Phase inversion

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	5 kHz
B	416.7 Hz
C	60 kHz
D	101.75 Hz

31. - G8C05

In an ARQ mode, what is meant by a NAK response to a transmitted packet?

Select	Answer
A	Entire file received correctly
B	Receiving station connected and ready for transmissions
C	Request retransmission of the packet
D	Packet was received without error

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	1:2
B	2:1
C	5:1
D	1:5

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	21 feet
B	8 feet
C	16 feet
D	11 feet

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Tapered-diameter elements
B	Closer element spacing
C	Loading coils in series with the element
D	Larger-diameter elements

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By deploying a capacitance hat
B	By extending and retracting the whip
C	By varying its body capacitance
D	By varying the base loading inductance

Figure G7-1