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. - G1A13

What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

Select	Answer
A	Move to a clear frequency or stop transmitting
B	Increase your transmitter's power to overcome the interference
C	Notify the FCCs regional Engineer in Charge of the interference
D	Attempt to contact the station and request that it stop the interference

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Identifying net frequencies
B	Transmission of bulletins of general interest to Amateur Radio licensees
C	Observation of propagation and reception
D	Automatic identification of repeaters

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	1000 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	2000 watts PEP output

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person must hold an FCC granted Amateur Radio license of General Class or above
B	The person's home citizenship must be in ITU region 2
C	The person must be a resident of the U.S. for a minimum of 5 years
D	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner

5. - G1E01

Which of the following would disqualify a third party from participating in stating a message over an amateur station?

Select	Answer
A	The third party is speaking in a language other than English
B	The third party is not a U.S. citizen
C	The third party is a licensed amateur
D	The third party's amateur license has been revoked and not reinstated

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

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

7. - G2B11

What frequency should be used to send a distress call?

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

8. - G2C05

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

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

9. - G2D06

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

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

10. - G2E08

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

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

11. - G3A13

What does the A-index indicate?

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

12. - G3B10

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

Select	Answer
A	2,500 miles
B	1,200 miles
C	180 miles
D	12,000 miles

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

14. - G4A10

What is the purpose of an electronic keyer?

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

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When testing logic circuits
B	When high precision is desired
C	When measuring the frequency of an oscillator
D	When adjusting tuned circuits

16. - G4C01

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

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

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It reduces intermodulation distortion
B	It increases peak power
C	It reduces harmonic distortion
D	It increases average power

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce the chance of damage if the antenna should strike an object
B	To narrow the operating bandwidth of the antenna
C	To reduce high voltage discharge from the tip of the antenna
D	To increase the "Q" of the antenna

19. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of direct current caused by resistance
B	A property of ideal resistors in AC circuits
C	A large spark produced at switch contacts when an inductor is de-energized
D	Opposition to the flow of alternating current caused by capacitance or inductance

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It decreases as more parallel branches are added to the circuit
B	It equals the sum of the currents through each branch
C	It is the sum of the reciprocal of each individual voltage drop
D	It equals the average of each branch current

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To insure that the volume of the primary winding is equal to the volume of the secondary winding
B	To improve the coupling between the primary and secondary
C	To accommodate the higher current of the primary
D	To prevent parasitic oscillations due to resistive losses in the primary

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

Select	Answer
A	Much less leakage than any other type
B	Tight tolerance
C	High capacitance for a given volume
D	Inexpensive RF capacitor

23. - G6B04

What is meant by the term ROM?

Select	Answer
A	Resistant to Overload Memory
B	Resistor Operated Memory
C	Random Operational Memory
D	Read Only Memory

24. - G7A03

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

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

25. - G7B09

What determines the frequency of an LC oscillator?

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

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	Balanced modulator
B	RF oscillator
C	Product detector
D	IF filter

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By reconfiguring the CW keying input to act as a tone generator
B	By changing an oscillator's frequency directly with a digital control signal
C	By using a transceiver's computer data interface protocol to change frequencies
D	By keying an FM transmitter with a sub-audible tone

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	1800 Hz
B	31.5 Hz
C	2300 Hz
D	500 Hz

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A code using error detection and correction
B	A 7-bit code with start, stop and parity bits
C	A code using SELCAL and LISTEN
D	A 5-bit code with additional start and stop bits

30. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	Operating an antenna at its resonant frequency
B	Feeding the antenna with unbalanced feed line
C	A difference between feed line impedance and antenna feed point impedance
D	Using more transmitter power than the antenna can handle

31. - G9B12

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

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

32. - G9C20

What is meant by the terms dBi and dBd when referring to antenna gain?

Select	Answer
A	dBi refers to an isometric antenna, dBd refers to a discone antenna
B	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna
C	dBi refers to an isotropic antenna, dBd refers to a dipole antenna
D	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	It has poor directivity
B	It has high losses compared to other types of antennas
C	All of these choices are correct
D	Its impedance is too low for effective matching

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	A higher transmitter duty cycle permits greater short-term exposure levels
B	A lower transmitter duty cycle permits greater short-term exposure levels
C	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
D	High duty cycle transmitters are exempt from RF exposure requirements

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	All of these choices are correct
B	Insure that all lightning grounds are disconnected
C	Insure that the generator is not grounded
D	Disconnect the incoming utility power feed