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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 1
B	All three regions
C	Region 3
D	Region 2

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The Control Operator
B	The IEEE
C	The FCC
D	The ITU

3. - G1C01

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

Select	Answer
A	200 watts PEP output
B	1500 watts PEP output
C	1000 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	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
B	The person's home citizenship must be in ITU region 2
C	The person must hold an FCC granted Amateur Radio license of General Class or above
D	The person must be a resident of the U.S. for a minimum of 5 years

5. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

Select	Answer
A	Only during an FCC declared general state of communications emergency
B	Only if the 10-meter repeater control operator holds at least a General Class license
C	Under no circumstances
D	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission

6. - G2A08

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

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	1 to 3 kHz
B	3 to 6 kHz
C	150 to 500 Hz
D	5 to 50 Hz

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Repeat everything twice
B	Increase your power
C	Change frequency
D	Send slower

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	To help with a reply if the FCC requests information
B	The ITU requires a log of all international third party traffic
C	The ITU requires a log of all international contacts
D	The log provides evidence of operation needed to renew a license without retest

10. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Transmit a steady carrier until the PACTOR protocol times out and disconnects
B	Joining an existing contact is not possible, PACTOR connections are limited to two stations
C	Send a NAK response continuously so that the sending station has to pause
D	Send broadcast packets containing your call sign while in MONITOR mode

11. - G3A11

Approximately how long is the typical sunspot cycle?

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

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency for communications between two points
B	The Longest Universal Function during a 24 hour period
C	The Longest Universal Function for communications between two points
D	The Lowest Usable Frequency during a 24 hour period

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	All of these choices are correct
B	They have very large swings in signal strength
C	They have a wavering sound
D	They have high intelligibility

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce power consumption when operating from batteries
B	To slow down received CW signals for better copy
C	To reduce signal overload due to strong incoming signals
D	To reduce the transmitter power when driving a linear amplifier

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Measuring the turns ratio of a power transformer
B	Measuring the front to back ratio of an antenna
C	Determining the impedance of an unknown or unmarked coaxial cable
D	Determining the gain of a directional antenna

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Placing a ferrite choke around the cable
B	Adding shunt inductors to the conductors
C	Adding an additional insulating jacket to the cable
D	Adding series capacitors to the conductors

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 8 times
B	Approximately 1.5 times
C	Approximately 4 times
D	Approximately 2 times

18. - G4E06

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

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

19. - G5A02

What is reactance?

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

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 61 milliwatts
B	Approximately 11 milliwatts
C	Approximately 61 watts
D	Approximately 11 watts

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

Select	Answer
A	70 microfarads
B	14.3 microfarads
C	1000 microfarads
D	0.07 microfarads

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To reduce grid-to-plate capacitance
B	To decrease plate resistance
C	To increase the control grid resistance
D	To increase efficiency

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	Type SMA
B	DE-9
C	Type N
D	PL-259

24. - G7A05

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

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

25. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the DC input power by the DC output power
B	Divide the RF output power by the DC input power
C	Multiply the RF input power by the reciprocal of the RF output power
D	Add the RF input power to the DC output power

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Relatively high power output
B	Variable frequency with the stability of a crystal oscillator
C	Relatively low power consumption
D	Wide tuning range and no need for band switching

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 keying an FM transmitter with a sub-audible tone
C	By using a transceiver's computer data interface protocol to change frequencies
D	By changing an oscillator's frequency directly with a digital control signal

28. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It results in the best signal to noise ratio
B	It minimizes power consumption in the receiver
C	It is required by FCC rules
D	It improves impedance matching of the antenna

29. - G8C02

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

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

30. - G9A15

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	The higher the transmission line loss, the more the SWR will read artificially high
B	The higher the transmission line loss, the more the SWR will read artificially low
C	Transmission line loss does not affect the SWR measurement
D	The higher the transmission line loss, the more accurate the SWR measurement will be

31. - G9B04

What is the radiation pattern of a dipole antenna in free space in the plane of the conductor?

Select	Answer
A	It has a pair of lobes on one side of the antenna and a single lobe on the other side
B	It is a figure-eight at right angles to the antenna
C	It is a circle (equal radiation in all directions)
D	It is a figure-eight off both ends of the antenna

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To increase the main lobe gain
B	To match the relatively high feed point impedance to 50 ohms
C	To match the relatively low feed point impedance to 50 ohms
D	To increase the front-to-back ratio

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A12

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

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

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	Only the neutral wire
B	Only the ground wire
C	All wires
D	Only the two wires carrying voltage