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

Anonymous User

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

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A01

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

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

2. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	15 amperes
B	25 amperes
C	20 amperes
D	30 amperes

3. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	30 meters
C	60 meters
D	12 meters

4. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	No more than one beacon station may transmit in the same band from the same station location
B	The frequency must be posted on the internet or published in a national periodical
C	All these choices are correct
D	The frequency must be coordinated with the National Beacon Organization

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
B	Obtain an experimental license from the FCC
C	Publicly document the technical characteristics of the protocol
D	Type-certify equipment to FCC standards

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	Only on the Technician band segments until you have a receipt for the FCC application fee payment
B	On any General or Technician class band segment
C	Only the Technician band segments until your upgrade is posted in the FCC database
D	On any General or Technician class band segment except 30 meters and 60 meters

7. - 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 station initiating the contact must be under local or remote control
B	The interrogating transmission must be made by another automatically controlled station
C	No third-party traffic may be transmitted
D	The control operator of the interrogating station must hold an Amateur Extra class license

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

Select	Answer
A	Suppressed sideband
B	Lower sideband
C	Upper sideband
D	Double sideband

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only contacts with other stations within the 48 contiguous states
B	Only contacts with stations not within the 48 contiguous states
C	Only SSTV contacts
D	Only digital contacts

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	An operator must activate a manual send/receive switch before and after every transmission
B	Breaking stations send the Morse code prosign “BK”
C	Automatic keyers, instead of hand keys, are used to send Morse code
D	Transmitting stations can receive between code characters and elements

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Able, Baker, Charlie, Dog
B	Alpha, Bravo, Charlie, Delta
C	America, Boston, Canada, Denmark
D	Adam, Boy, Charles, David

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	Terminal Node Controller
B	Printer/Server
C	RJ-45
D	Gateway

13. - 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
C	At any point
D	Only at the maximum point

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	Heavy distortion on signals due to photon absorption
B	High levels of atmospheric noise or static
C	Poor propagation at any time of day
D	World-wide propagation during daylight hours

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

Select	Answer
A	Because of the Doppler effect
B	Because it is the highest
C	Because it is the densest
D	Because of temperature inversions

16. - G4A11

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

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

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When testing logic circuits
B	When measuring the frequency of an oscillator
C	When adjusting circuits for maximum or minimum values
D	When high precision is desired

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

Select	Answer
A	Solder flux will prevent a low conductivity connection
B	A soldered joint will likely be destroyed by the heat of a lightning strike
C	All these choices are correct
D	Solder has too high a dielectric constant to provide adequate lightning protection

19. - 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 more powerful
C	It is 20 times less powerful
D	It is 100 times more powerful

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	1.38 VDC
B	0.2 VDC
C	0.02 VDC
D	0.5 VDC

21. - G5A08

What is impedance?

Select	Answer
A	The product of current and voltage
B	The product of current and reactance
C	The ratio of voltage to current
D	The ratio of current to voltage

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	34 volts
B	12 volts
C	8.5 volts
D	24 volts

23. - G5C05

Why is the primary winding wire of a voltage step-up transformer usually a larger size than that of the secondary winding?

Select	Answer
A	To accommodate the higher current of the primary
B	To prevent parasitic oscillations due to resistive losses in the primary
C	To ensure that the volume of the primary winding is equal to the volume of the secondary winding
D	To improve the coupling between the primary and secondary

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	Enhancement and depletion modes
B	Peak and valley current points
C	The active region (between cutoff and saturation)
D	Saturation and cutoff

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	BNC
B	Type N
C	PL-259
D	RCA Phono

26. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A series of DC pulses at the same frequency as the AC input
B	A steady DC voltage
C	A sine wave at half the frequency of the AC input
D	A series of DC pulses at twice the frequency of the AC input

27. - G7B03

Which of the following describes the function of a two-input AND gate?

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

28. - G7C01

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

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

29. - G8A01

How is direct binary FSK modulation generated?

Select	Answer
A	By keying an FM transmitter with a sub-audible tone
B	By reconfiguring the CW keying input to act as a tone generator
C	By changing an oscillator’s frequency directly with a digital control signal
D	By using a transceiver’s computer data interface protocol to change frequencies

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Even-order
B	Intercept point
C	Odd-order
D	Second harmonics

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	SSB-SC
B	MFSK16
C	PSK31
D	WSPR

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

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

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight at right angles to the antenna
B	It is a circle (equal radiation in all directions)
C	It is a figure-eight off both ends of the antenna
D	It has a pair of lobes on one side of the antenna and a single lobe on the other side

34. - G9C01

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

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

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	Electrically small loops are omnidirectional
B	In the plane of the loop
C	Broadside and in the plane of the loop
D	Broadside to the loop