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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	12 meters
B	160 meters
C	17 meters
D	30 meters

2. - G1B11

How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

Select	Answer
A	In conformance with good engineering and good amateur practice
B	In conformance with the rules of the IARU
C	In conformance with Amateur Radio custom
D	All of these choices are correct

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D04

Which of the following is a requirement for administering a Technician Class license examination?

Select	Answer
A	At least two General Class or higher VEs must be present
B	At least three VEs of Technician Class or higher must observe the examination
C	At least three General Class or higher VEs must observe the examination
D	At least two General Class or higher VEs must be present, but only one need be Extra Class

5. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
B	On any band segment where digital operation is permitted
C	Only in the non-phone Extra Class segments of the bands
D	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Ease of tuning on receive and immunity to impulse noise
B	Less bandwidth used and greater power efficiency
C	Less subject to interference from atmospheric static crashes
D	Very high fidelity voice modulation

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. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Will you keep the frequency clear?"
B	"Are you operating full break-in" or "Can you operate full break-in?"
C	"Are you busy?", or "Is this frequency in use?"
D	"Are you listening only for a specific station?"

9. - G2D06

How is a directional antenna pointed when making a "long-path" contact with another station?

Select	Answer
A	Along the gray line
B	180 degrees from its short-path heading
C	Toward the rising Sun
D	Toward the north

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

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

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved high-latitude HF propagation
B	Improved ground-wave propagation
C	Degraded high-latitude HF propagation
D	Improved chances of UHF ducting

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

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

13. - G3C11

Which of the following antenna types will be most effective for skip communications on 40-meters during the day?

Select	Answer
A	A vertical antenna
B	A horizontal dipole placed between 1/8 and 1/4 wavelength above the ground
C	A right-hand circularly polarized antenna
D	A left-hand circularly polarized antenna

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

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

15. - G4B09

Which of the following can be determined with a field strength meter?

Select	Answer
A	The presence and amount of amplitude distortion of a transmitter
B	The presence and amount of phase distortion of a transmitter
C	The radiation resistance of an antenna
D	The radiation pattern of an antenna

16. - G4C13

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

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

17. - 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 20 times less powerful
B	It is 10 times less powerful
C	It is 100 times more powerful
D	It is 20 times more powerful

18. - G4E05

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

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

19. - G5A01

What is impedance?

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

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	0.707
C	1.414
D	2.00

21. - G5C07

What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?

Select	Answer
A	150 to 1
B	12.2 to 1
C	24.4 to 1
D	300 to 1

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The source is separated from the drain by a thin insulating layer
B	The source is formed by depositing metal on silicon
C	The gate is separated from the channel with a thin insulating layer
D	The gate is formed by a back-biased junction

23. - G6B11

What is a microprocessor?

Select	Answer
A	A computer on a single integrated circuit
B	A low voltage amplifier used in a microwave transmitter modulator stage
C	A low power analog signal processor used as a microwave detector
D	A microwave detector, amplifier, and local oscillator on a single integrated circuit

24. - G7A06

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

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

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class AB
B	Class B
C	Class A
D	Class C

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By converting the signal from digital to analog and taking the difference of mixing products
B	By differential spurious phasing
C	By converting the signal from analog to digital and using digital processing
D	By using direct signal phasing

27. - G8A08

Which of the following is an effect of overmodulation?

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

28. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Reactance modulator
B	Mixer
C	Pre-emphasis network
D	Multiplier

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	Clover
B	FSK441 and Hellschreiber
C	JT9 and JT65
D	RTTY

30. - G9A14

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

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

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower feed point impedance
B	Lower radiation resistance
C	Lower ground reflection losses
D	Shorter Radials

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About 2/3 as much
B	About the same
C	About twice as much
D	About 1.5 times as much

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A09

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

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

35. - 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	30 amperes
B	60 amperes
C	100 amperes
D	15 amperes