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

Anonymous User

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

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

1. - G1A05

Which of the following frequencies is in the General Class portion of the 40-meter band?

Select	Answer
A	7.250 MHz
B	7.500 MHz
C	40.500 MHz
D	40.200 MHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	Only when the information is of a routine, personal nature
B	During a declared communications emergency
C	To control a space station
D	Only with Special Temporary Authorization from the FCC

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1000 watts PEP output
B	100 watts PEP output
C	1500 watts PEP output
D	2000 watts PEP output

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Universal Licensing System
B	The Federal Communications Commission
C	The Wireless Telecommunications Bureau
D	A Volunteer Examiner Coordinator

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	Information must be exchanged in English
B	The control operator must have at least a General Class license
C	All of these choices are correct
D	The foreign amateur station must be in a country with which the United States has a third party agreement

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B10

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

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

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	I am quitting for the day
B	There is interference on the frequency
C	I am ready to receive messages
D	You are sending too fast

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Hunters have an opportunity to transmit on non-amateur frequencies
B	Identification of different call signs
C	Identification of out of band operation
D	Direction finding used to locate stations violating FCC Rules

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3570 - 3600 kHz
B	3700 - 3750 kHz
C	3500 - 3525 kHz
D	3775 - 3825 kHz

11. - G3A10

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

Select	Answer
A	Long term oscillations in the upper atmosphere
B	Cyclic variation in the Earth's radiation belts
C	The Sun's rotation on its axis
D	The position of the Moon in its orbit

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Send a series of dots on the band and listen for echoes from your signal
B	Listen for signals from an international beacon in the frequency range you plan to use
C	Check the strength of signals in the MF AM broadcast band
D	Check the strength of TV signals from Western Europe

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The communication is during a sunspot maximum
B	The communication is during a sudden ionospheric disturbance
C	The signal is heard on a frequency above the Maximum Usable Frequency
D	The signal is heard on a frequency below the Maximum Usable Frequency

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Insufficient drive power
B	Low input SWR
C	Excessive drive power
D	Shorting the input signal to ground

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two swept frequency tones
C	Two audio frequency range square wave signals of equal amplitude
D	Two audio signals of the same frequency shifted 90 degrees

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Adding series capacitors to the conductors
B	Adding an additional insulating jacket to the cable
C	Placing a ferrite choke around the cable
D	Adding shunt inductors to the conductors

17. - 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 to 7.178 MHz
B	7.1765 to 7.1795 MHz
C	7.178 to 7.181 MHz
D	7.178 to 7.184 MHz

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To electrically lengthen a physically short antenna
B	To increase the power handling capacity of a whip antenna
C	To allow automatic band changing
D	To allow remote tuning

19. - G5A01

What is impedance?

Select	Answer
A	The force of repulsion between two similar electric fields
B	The electric charge stored by a capacitor
C	The inverse of resistance
D	The opposition to the flow of current in an AC circuit

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1500 watts
B	1060 watts
C	2120 watts
D	530 watts

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	3583 picofarads
C	576.9 nanofarads
D	1733 picofarads

22. - G6A04

When is it acceptable to recharge a carbon-zinc primary cell?

Select	Answer
A	When the cell is kept warm during the recharging period
B	Never
C	When a constant current charger is used
D	As long as the voltage has not been allowed to drop below 1.0 volt

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	All of these choices are correct
B	It requires ambient or back lighting
C	It offers a wide dynamic range
D	It has a wide viewing angle

24. - G7A03

What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

Select	Answer
A	Equal to the normal peak output voltage of the power supply
B	Half the normal output voltage of the power supply
C	One-quarter the normal output voltage of the power supply
D	Double the normal peak output voltage of the power supply

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier used as a frequency multiplier
B	An amplifier in which the output preserves the input waveform
C	Any RF power amplifier used in conjunction with an amateur transceiver
D	A Class C high efficiency amplifier

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	Twice the transmission line impedance
B	Substantially lower
C	About the same
D	Substantially higher

27. - G8A09

What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Select	Answer
A	Antenna inductance or capacitance
B	The RF clipping level
C	Attenuator level
D	Transmit audio or microphone gain

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	Discriminator
B	Mixer
C	VFO
D	BFO

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	8
B	7
C	The number varies
D	5

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	You cannot determine SWR from impedance values
B	2:1
C	1.25:1
D	2.5:1

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It decreases
B	It stays the same
C	It increases
D	It reaches a maximum at an angle of 45 degrees

32. - G9C02

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

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

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Harmonic suppression
B	Polarization diversity
C	Wide bandwidth
D	Higher gain per element than a Yagi 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. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Acceptable modulation limits
B	Electrical safety inside the ham shack
C	RF exposure limits of the human body
D	Acceptable bandwidth limits