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	3900 kHz
B	3750 kHz
C	4005 kHz
D	1875 kHz

2. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?

Select	Answer
A	They are not permitted
B	They may be used if they do not obscure the meaning of a message
C	Only "Q" signals are permitted
D	Only "10 codes" are permitted

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Only the minimum power necessary to carry out the desired communications should be used
B	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
C	Power should be limited as necessary to avoid interference to another radio service on the frequency
D	Effective radiated power cannot exceed 1500 watts

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	Possession of a properly obtained telegraphy license
B	An FCC General Class or higher license and VEC accreditation
C	Notification to the FCC that you want to give an examination
D	Receipt of a CSCE for General Class

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Locally controlled station
B	Robotically controlled station
C	Automatically controlled digital station
D	Fail-safe digital station

6. - G2A01

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

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

7. - G2B11

What frequency should be used to send a distress call?

Select	Answer
A	Whichever frequency has the best chance of communicating the distress message
B	Only frequencies authorized for RACES or ARES stations
C	Only frequencies used by police, fire or emergency medical services
D	Only frequencies that are within your operating privileges

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The fastest speed at which you are comfortable copying
B	At the standard calling speed of 5 wpm
C	The speed at which the CQ was sent
D	A slow speed until contact is established

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	Band and/or frequency of the contact
B	Date and time of contact
C	All of these choices are correct
D	Call sign of station contacted and the signal report given

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.000 - 14.050 MHz
B	14.150 - 14.225 MHz
C	14.070 - 14.100 MHz
D	14.275 - 14.350 MHz

11. - G3A13

What does the A-index indicate?

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

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

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Double hop propagation near the LUF
B	Short distance MF or HF propagation using high elevation angles
C	Long path HF propagation at sunrise and sunset
D	Propagation near the MUF

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	The transmitter signal is distorted
B	The VOX circuit does not un-key the transmitter
C	Frequent connection timeouts
D	All of these choices are correct

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

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	A Digital Signal Processor (DSP) filter
B	Balanced mixing
C	A noise limiter
D	Bandpass tuning

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz above the edge of the segment
B	Your displayed carrier frequency may be set at the edge of the segment
C	At least 3 kHz below the edge of the segment
D	At least 1 kHz above the edge of the segment

18. - G4E06

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

Select	Answer
A	Short antennas can only receive circularly polarized signals
B	Operating bandwidth may be very limited
C	Short antennas are more likely to cause distortion of transmitted signals
D	Harmonic radiation may increase

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reactance
B	Reluctance
C	Admittance
D	Conductance

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	692 volts
B	173 volts
C	245 volts
D	346 volts

21. - G5C05

If three equal value resistors in series produce 450 ohms, what is the value of each resistor?

Select	Answer
A	150 ohms
B	175 ohms
C	1500 ohms
D	90 ohms

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A varistor
B	A tunnel diode
C	A bipolar transistor
D	A field effect transistor

23. - G6B18

What is a type SMA connector?

Select	Answer
A	A type of push-on connector intended for high voltage applications
B	A connector designed for serial multiple access signals
C	A large bayonet connector usable at power levels in excess of 1 KW
D	A small threaded connector suitable for signals up to several GHz

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	Equal to the normal output voltage of the power supply
B	One-half the normal peak output voltage of the power supply
C	One-half the normal output voltage of the power supply
D	Two times the normal peak output voltage of the power supply

25. - G7B02

Which of the following is an advantage of using the binary system when processing digital signals?

Select	Answer
A	The binary number system is most accurate
B	Binary "ones" and "zeros" are easy to represent by an "on" or "off" state
C	All of these choices are correct
D	Binary numbers are more compatible with analog circuitry

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	All of the these choices are correct
B	A digital to analog converter
C	An analog to digital converter
D	A digital processor chip

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency modulation
C	Frequency conversion
D	Frequency transformation

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	5 kHz
C	16 kHz
D	3 kHz

29. - G8C02

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

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

30. - G9A02

What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

Select	Answer
A	50 and 75 ohms
B	80 and 100 ohms
C	500 and 750 ohms
D	25 and 30 ohms

31. - G9B12

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

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

32. - G9C07

What does "front-to-back ratio" mean in reference to a Yagi antenna?

Select	Answer
A	The ratio of forward gain to dipole gain
B	The number of directors versus the number of reflectors
C	The relative position of the driven element with respect to the reflectors and directors
D	The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A broad-band mobile antenna
B	A helical antenna for space reception
C	A very long and low directional receiving antenna
D	A vertical antenna

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Turn off the transmitter and disconnect the feed line
B	Ensure that you and the antenna structure are grounded
C	All of these choices are correct
D	Wear a radiation badge

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

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