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	3900 kHz
D	3750 kHz

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	All of these choices are correct
B	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
C	The FCC must have declared a state of emergency
D	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies

3. - G1C11

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

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
C	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
D	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years

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

6. - G2A08

Which of the following is a recommended way to break into a contact when using phone?

Select	Answer
A	Say your call sign during a break between transmissions by the other stations
B	Say "QRZ" several times followed by your call sign
C	Say "Break Break Break" and wait for a response
D	Say "CQ" followed by the call sign of either station

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	At any time during an actual emergency
B	Only on authorized HF frequencies
C	Only when transmitting in RACES
D	At any time when transmitting in an organized net

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	AR
B	SK
C	BK
D	KN

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of the date, time, frequency, power level and stations worked
B	You must keep a record of all third party traffic
C	You must keep a record of the manufacturer of your equipment and the antenna used
D	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna

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

11. - G3A13

What does the A-index indicate?

Select	Answer
A	The amount of polarization of the Sun's electric field
B	The long term stability of the Earth's geomagnetic field
C	The solar radio flux at Boulder, Colorado
D	The relative position of sunspots on the surface of the Sun

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	All of these choices are correct
B	Path distance and location
C	Solar radiation and ionospheric disturbances
D	Time of day and season

13. - G3C07

What makes HF scatter signals often sound distorted?

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

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A slow, rhythmic oscillation
B	No change will be observed
C	A pronounced dip
D	A pronounced peak

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Input impedance is much lower
B	An oscilloscope uses less power
C	Complex impedances can be easily measured
D	Complex waveforms can be measured

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Bypass inductor
B	Forward-biased diode
C	Bypass capacitor
D	Reverse-biased diode

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.347 to 14.647 MHz
B	14.347 to 14.350 MHz
C	14.3455 to 14.3485 MHz
D	14.344 to 14.347 MHz

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	"Picket Fencing" signal variation
B	FCC rules limiting mobile output power on the 75-meter band
C	The wire gauge of the DC power line to the transceiver
D	The antenna system

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ampere
B	Watt
C	Ohm
D	Volt

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	24 watts
B	2.4 watts
C	6 watts
D	60 watts

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	0.22 nF
B	220 nF
C	22 nF
D	2.2 nF

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	High stability
B	Comparatively low cost
C	High capacitance for given volume
D	Tight tolerance

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	At the Zener voltage
B	Forward Biased
C	Reverse Biased
D	Beyond cutoff

24. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	270 degrees
B	90 degrees
C	360 degrees
D	180 degrees

25. - G7B03

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

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

26. - G7C08

What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Select	Answer
A	Product detector
B	Mixer
C	Phase inverter
D	Discriminator

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient audio
B	Frequency drift
C	Insufficient bandwidth
D	Excessive bandwidth

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Higher symbol rates require wider bandwidth
B	Bandwidth is always half the symbol rate
C	Lower symbol rates require wider bandwidth
D	Symbol rate and bandwidth are not related

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and Off
B	Mark and Space
C	Dot and Dash
D	High and Low

30. - G9A14

What is the interaction between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR makes it difficult to measure transmission line loss
B	High SWR reduces the relative effect of transmission line loss
C	There is no interaction between transmission line loss and SWR
D	If a transmission line is lossy, high SWR will increase the loss

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Slope the radials upward
B	Slope the radials downward
C	Shorten the radials
D	Lengthen the radials

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The director is normally the longest element
B	The reflector is normally the longest element
C	All of the elements must be the same length
D	The reflector is normally the shortest element

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They present low impedance on all design frequencies
B	They have poor harmonic rejection
C	They must be fed with open wire line
D	They must be used with an antenna tuner

34. - G0A09

What type of instrument can be used to accurately measure an RF field?

Select	Answer
A	An SWR meter with a peak-reading function
B	An oscilloscope with a high-stability crystal marker generator
C	A calibrated field strength meter with a calibrated antenna
D	A receiver with an S meter

35. - G0B14

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

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