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	Region 3
C	Region 2
D	All three regions

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Insure that the frequency and mode selected are within your license class privileges
B	Follow generally accepted band plans agreed to by the Amateur Radio community
C	All of these choices are correct
D	Monitor the frequency before transmitting

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	5.6 kHz
B	2.8 kHz
C	1.8 kHz
D	3 kHz

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	Whenever you operate using General Class frequency privileges
B	A special identifier is not required as long as your General Class license application has been filed with the FCC
C	Whenever you operate on any amateur frequency
D	Whenever you operate using Technician frequency privileges

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	Under no circumstances
B	When under automatic control
C	When messages are encrypted
D	When messages are not encrypted

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	Only on authorized HF frequencies
B	At any time during an actual emergency
C	At any time when transmitting in an organized net
D	Only when transmitting in RACES

8. - G2C02

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

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

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a particular location
B	A map that shows accurate land masses
C	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
D	A map that shows the angle at which an amateur satellite crosses the equator

10. - G2E11

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

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

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	30 meters and 20 meters
B	60 meters and 40 meters
C	15 meters, 12 meters and 10 meters
D	80 meters and 160 meters

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	12,000 miles
B	1,200 miles
C	2,500 miles
D	180 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 signal is heard on a frequency below the Maximum Usable Frequency
D	The communication is during a sudden ionospheric disturbance

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Highest plate voltage while minimizing grid current
B	Minimum SWR on the antenna
C	Minimum plate current without exceeding maximum allowable grid current
D	Maximum power output without exceeding maximum allowable plate current

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 adjusting tuned circuits
D	When measuring the frequency of an oscillator

16. - G4C08

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

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

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.175 to 7.178 MHz
B	7.1765 to 7.1795 MHz
C	7.178 to 7.181 MHz
D	7.178 to 7.184 MHz

18. - G4E02

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

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

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Insert a circulator between the two circuits
B	Reduce the power output of the first circuit
C	Increase the power output of the first circuit
D	Insert an LC network between the two circuits

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

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	14.3 microfarads
C	70 microfarads
D	1000 microfarads

22. - G6A09

Which of the following describes the construction of a MOSFET?

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

23. - G6B02

What is meant by the term MMIC?

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

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	Quartz crystals
C	Transformers and transducers
D	Capacitors and inductors

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	No need for bias
B	Low distortion
C	High Efficiency
D	Low standby power

26. - G7C07

What is the simplest combination of stages that implement a superheterodyne receiver?

Select	Answer
A	HF oscillator, prescaler, audio amplifier
B	RF amplifier, mixer, IF discriminator
C	HF oscillator, mixer, detector
D	RF amplifier, detector, audio amplifier

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Frequency modulation
B	Double sideband
C	Phase modulation
D	Single sideband

28. - G8B08

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

Select	Answer
A	Some modes have high duty cycles which could exceed the transmitter's average power rating.
B	To allow time for the other station to break in during a transmission
C	All of these choices are correct
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	The number varies
C	5
D	8

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	50 ohms
B	100 ohms
C	75 ohms
D	300 ohms

31. - G9B12

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

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

32. - G9C03

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

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

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Portable direction finding at higher HF frequencies
C	Portable direction finding at lower HF frequencies
D	Directional receiving for low HF bands

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	All of these choices are correct
C	File an Environmental Impact Statement (EIS-97) with the FCC
D	Secure written permission from your neighbors to operate above the controlled MPE limits

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	Solder flux will prevent a low conductivity connection
B	A soldered joint will likely be destroyed by the heat of a lightning strike
C	The resistance of solder is too high
D	Solder has too high a dielectric constant to provide adequate lightning protection