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. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
B	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
C	Use an FCC-approved band-pass filter
D	Contact the FCC for permission to transmit

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	Unground the base of the tower
B	All these choices are correct
C	Notify the electric company that a person will be working on the tower
D	Make sure all circuits that supply power to the tower are locked out and tagged

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	21.275 MHz to 21.300 MHz
B	7.125 MHz to 7.175 MHz
C	28.000 MHz to 28.025 MHz
D	All these choices are correct

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	On any frequency if transmissions are in Morse code
B	28.20 MHz to 28.30 MHz
C	21.08 MHz to 21.09 MHz
D	On any frequency if power is less than 1 watt

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	10 watts RMS
B	1500 watts PEP
C	ERP of 100 watts PEP with respect to a dipole
D	ERP of 100 watts PEP with respect to an isotropic antenna

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

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Only when the message is intended for licensed radio amateurs
B	Under no circumstances except for emergencies
C	Only when the message is intended for third parties in areas where licensing is controlled by the FCC
D	Under any circumstances in which third party messages are permitted by FCC rules

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Decrease power and continue to transmit
B	Advise the interfering stations that you are on the frequency and that you have priority
C	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner
D	Switch to the opposite sideband

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Change frequency
B	Send slower
C	Increase your power
D	Repeat everything twice

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
B	Compare signal strengths between the input and output of the repeater
C	Compare vertical and horizontal signal strengths on the input frequency
D	All these choices are correct

12. - G2E08

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

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

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	HF communication is disturbed
B	HF communication is improved
C	VHF/UHF ducting is improved
D	VHF/UHF ducting is disturbed

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

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

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Energy is scattered into the skip zone through several different paths
B	The E region is not present
C	The ionospheric region involved is unstable
D	Ground waves are absorbing much of the signal

16. - G4A01

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

Select	Answer
A	To remove interfering splatter generated by signals on adjacent frequencies
B	To reduce interference from carriers in the receiver passband
C	To restrict the transmitter voice bandwidth
D	To eliminate receiver interference from impulse noise sources

17. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	A signal generator
B	An ammeter
C	An ohmmeter
D	An oscilloscope

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	A chirpy CW signal
B	A CW signal at a nearly pure audio frequency
C	Severely distorted audio
D	On-and-off humming or clicking

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	Excess intermodulation products
B	All these choices are correct
C	Excessive background noise
D	Distorted speech

20. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

Select	Answer
A	Q of the antenna will be very low
B	Short antennas are more likely to cause distortion of transmitted signals
C	Harmonic radiation may increase
D	Operating bandwidth may be very limited

21. - G5A02

What is reactance?

Select	Answer
A	Reinforcement of the flow of direct current caused by resistance
B	Reinforcement of the flow of alternating current caused by capacitance or inductance
C	Opposition to the flow of alternating current caused by capacitance or inductance
D	Opposition to the flow of direct current caused by resistance

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

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

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

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

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

25. - G6B12

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

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

26. - G7A11

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

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

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	A frequency multiplier and a mixer
C	An amplifier and a divider
D	A circulator and a filter operating in a feed-forward loop

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

Select	Answer
A	Detection
B	Filtering
C	Modulation
D	All these choices are correct

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Phase modulation
B	Multiplex modulation
C	Amplitude modulation
D	Pulse modulation

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	60 kHz
B	5 kHz
C	416.7 Hz
D	101.75 Hz

31. - G8C09

Which is true of mesh network microwave nodes?

Select	Answer
A	More nodes reduce overall microwave out of band interference
B	Having more nodes increases signal strengths
C	Links between two nodes in a network may have different frequencies and bandwidths
D	If one node fails, a packet may still reach its target station via an alternate node

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The antenna feed point must be at DC ground potential
B	The feed line must be an odd number of electrical quarter wavelengths long
C	The feed line must be an even number of physical half wavelengths long
D	The antenna feed point impedance must be matched to the characteristic impedance of the feed line

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Isotropic
B	Omnidirectional in azimuth
C	Hemispherical
D	Bi-directional in azimuth

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1/2 wavelength
B	1 wavelength
C	3/4 wavelength
D	1/4 wavelength

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

Figure G7-1