US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A05

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

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

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	When it is an incidental part of a manned space craft retransmission
B	At any time, as long as it produces no spurious emissions
C	When it is transmitted on frequencies above 1215 MHz
D	When it is unintentionally transmitted from the background at the transmitter

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

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 must be a resident of the U.S. for a minimum of 5 years
C	The person must hold an FCC granted Amateur Radio license of General Class or above
D	The person's home citizenship must be in ITU region 2

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	Information must be exchanged in English
B	All of these choices are correct
C	The foreign amateur station must be in a country with which the United States has a third party agreement
D	The control operator must have at least a General Class license

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	Lower sideband
B	Upper sideband
C	Double 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	Only frequencies that are within your operating privileges
C	Whichever frequency has the best chance of communicating the distress message
D	Only frequencies authorized for RACES or ARES stations

8. - G2C02

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

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

9. - G2D08

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

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

10. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	425 Hz
B	850 Hz
C	85 Hz
D	170 Hz

11. - G3A12

What does the K-index indicate?

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

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

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

13. - G3C13

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

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

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Low input SWR
B	Excessive drive power
C	Insufficient drive power
D	Shorting the input signal to ground

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

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby CW transmitter?

Select	Answer
A	A chirpy CW signal
B	A CW signal at a nearly pure audio frequency
C	Severely distorted audio
D	On-and-off humming or clicking

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 2 times
C	Approximately 1.5 times
D	Approximately 4 times

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 antenna system
D	The wire gauge of the DC power line to the transceiver

19. - G5A06

How does a capacitor react to AC?

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

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	24 watts
B	2.4 watts
C	60 watts
D	6 watts

21. - G5C12

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

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

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's inductance could make circuit performance unpredictable
B	The resistor could overheat
C	The resistor's internal capacitance would detune the circuit
D	The resistor's tolerance value would not be adequate for such a circuit

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	An audio connector used in surround-sound installations
B	A moisture-resistant RF connector useful to 10 GHz
C	A small bayonet connector used for data circuits
D	A threaded connector used for hydraulic systems

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 5
D	Symbol 11

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	All of these choices are correct
B	AM
C	SSB
D	CW

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	RF oscillator
B	Product detector
C	Balanced modulator
D	IF filter

27. - G8A08

Which of the following is an effect of overmodulation?

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

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To allow time for the other station to break in during a transmission
B	All of these choices are correct
C	Some modes have high duty cycles which could exceed the transmitter's average power rating.
D	To aid in tuning your transmitter

29. - G8C02

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

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

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	2:1
B	1:2
C	4:1
D	1:4

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Shorten the radials
B	Slope the radials downward
C	Slope the radials upward
D	Lengthen the radials

32. - G9C07

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

Select	Answer
A	The number of directors versus the number of reflectors
B	The ratio of forward gain to dipole gain
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. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	As close to one wavelength as possible
B	As close to 1/2 wavelength as possible
C	Height is not critical as long as it is significantly more than 1/2 wavelength
D	Between 1/10 and 1/4 wavelength

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	Take action to prevent human exposure to the excessive RF fields
B	File an Environmental Impact Statement (EIS-97) with the FCC
C	All of these choices are correct
D	Secure written permission from your neighbors to operate above the controlled MPE limits

35. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Acceptable bandwidth limits
B	Acceptable modulation limits
C	Electrical safety inside the ham shack
D	RF exposure limits of the human body

Figure G7-1