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. - G1A05

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

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

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	Never
B	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
C	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
D	Only when there is no other means of communications readily available

3. - G1C11

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

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

4. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	There is no age limit
B	21 years
C	12 years
D	18 years

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Countries in ITU Region 1
B	Countries in ITU Region 2
C	Any country which is not a member of the International Amateur Radio Union (IARU)
D	Every foreign country, unless there is a third party agreement in effect with that country

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It occupies less bandwidth
B	The received signal is more natural sounding
C	It provides more power output
D	It allows "hands free" operation

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 3 kHz
B	Between 150 and 500 Hz
C	Approximately 6 kHz
D	Approximately 10 kHz

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Chirpy or unstable signal
B	Report was read from an S meter rather than estimated
C	100 percent copy
D	Key clicks

9. - G2D10

What is QRP operation?

Select	Answer
A	Traffic relay procedure net operation
B	Remote piloted model control
C	Transmission using Quick Response Protocol
D	Low power transmit operation

10. - G2E11

What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?

Select	Answer
A	Overmodulation
B	Insufficient modulation
C	Backscatter propagation
D	Long Path propagation

11. - G3A11

Approximately how long is the typical sunspot cycle?

Select	Answer
A	28 days
B	40 hours
C	11 years
D	8 minutes

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagations is through ducts in F region which absorb most of the energy
B	Only a small part of the signal energy is scattered into the skip zone
C	Signals are scattered from the magnetosphere which is not a good reflector
D	Propagation is through ground waves which absorb most of the signal energy

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	Automatic generation of strings of dots and dashes for CW operation
C	VOX operation
D	Computer interface for PSK and RTTY operation

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It decreases battery consumption in the meter
B	It decreases the loading on circuits being measured
C	It improves the resolution of the readings
D	It improves the frequency response

16. - G4C13

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

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

17. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 1.5 times
C	Approximately 4 times
D	Approximately 8 times

18. - G4E06

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

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

19. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the frequency of the applied AC increases, the reactance increases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the amplitude of the applied AC increases, the reactance increases

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	100 watts
B	353.5 watts
C	400 watts
D	1.4 watts

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	A capacitor in parallel
B	A resistor in series
C	An inductor in series
D	A capacitor in series

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	Interleaved
B	In line
C	Parallel to each other
D	At right angles to each other

23. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Multi Megabyte Integrated Circuit
B	Military Manufactured Integrated Circuit
C	Monolithic Microwave Integrated Circuit
D	Mode Modulated Integrated Circuit

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A steady DC voltage
B	A sine wave at half the frequency of the AC input
C	A series of DC pulses at the same frequency as the AC input
D	A series of DC pulses at twice the frequency of the AC input

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the divider
B	The time delay of the lag circuit
C	The number of stages in the counter
D	The inductance and capacitance in the tank circuit

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

27. - G8A04

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

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

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	Multiplier
B	Reactance modulator
C	Mixer
D	Pre-emphasis network

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The year in which PSK31 was invented
B	The number of characters that can be represented by PSK31
C	The approximate transmitted symbol rate
D	The version of the PSK protocol

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	1.25:1
C	2:1
D	2.5:1

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 ground reflection losses
C	Shorter Radials
D	Lower radiation resistance

32. - G9C03

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

Select	Answer
A	Low feed point impedance increases bandwidth
B	The driven element is the longest element
C	The director is normally the shortest element
D	The reflector is normally the shortest element

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To prevent out of band operation
B	To permit multiband operation
C	To provide balanced feed point impedance
D	To notch spurious frequencies

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	Wear a radiation badge
D	All of these choices are correct

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	60 amperes
B	15 amperes
C	100 amperes
D	30 amperes