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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The lower frequency end
B	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz
C	The upper frequency end
D	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 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	Only when there is no other means of communications readily available
D	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

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1200 watts PEP output
B	1000 watts PEP output
C	200 watts PEP output
D	1500 watts PEP output

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Extra, General and Technician
B	General only
C	General and Technician
D	Technician only

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The station initiating the contact must be under local or remote control
B	No third party traffic maybe be transmitted
C	The interrogating transmission must be made by another automatically controlled station
D	The control operator of the interrogating station must hold an Extra Class license

6. - G2A08

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

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

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When they declare a temporary state of communication emergency
B	When the President's War Emergency Powers have been invoked
C	Only when all amateur stations are instructed to stop transmitting
D	When they seize your equipment for use in disaster communications

8. - G2C02

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

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

9. - G2D10

What is QRP operation?

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

10. - G2E06

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

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

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
B	A zero sunspot number indicate radio propagation is not possible on any band
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	All of these choices are correct.

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Listen for signals from an international beacon in the frequency range you plan to use
B	Check the strength of TV signals from Western Europe
C	Send a series of dots on the band and listen for echoes from your signal
D	Check the strength of signals in the MF AM broadcast band

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
B	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
C	The short path azimuth of a distant station
D	The long path azimuth of a distant station

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A pronounced peak
B	A pronounced dip
C	A slow, rhythmic oscillation
D	No change will be observed

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

16. - G4C03

What sound is heard from an audio device or telephone if there is interference from a nearby single sideband phone transmitter?

Select	Answer
A	On-and-off humming or clicking
B	Distorted speech
C	A steady hum whenever the transmitter is on the air
D	Clearly audible speech

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz below the edge of the segment
B	At least 1 kHz above the edge of the segment
C	At least 3 kHz above the edge of the segment
D	Your displayed carrier frequency may be set at the edge of the segment

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	The antenna system
C	"Picket Fencing" signal variation
D	The wire gauge of the DC power line to the transceiver

19. - G5A08

Why is impedance matching important?

Select	Answer
A	So the load will draw minimum power from the source
B	To ensure that there is less resistance than reactance in the circuit
C	So the source can deliver maximum power to the load
D	To ensure that the resistance and reactance in the circuit are equal

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	353.5 watts
B	1.4 watts
C	100 watts
D	400 watts

21. - G5C04

What is the total resistance of three 100 ohm resistors in parallel?

Select	Answer
A	300 ohms
B	0.30 ohms
C	0.33 ohms
D	33.3 ohms

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 separated from the drain by a thin insulating layer
C	The gate is separated from the channel with a thin insulating layer
D	The source is formed by depositing metal on silicon

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	It offers a wide dynamic range
B	It requires ambient or back lighting
C	It has a wide viewing angle
D	All of these choices are correct

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	All of these choices are correct
B	Faster switching time makes higher output voltage possible
C	High frequency operation allows the use of smaller components
D	Fewer circuit components are required

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class C
B	Class B
C	Class AB
D	Class A

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By differential spurious phasing
B	By converting the signal from digital to analog and taking the difference of mixing products
C	By using direct signal phasing
D	By converting the signal from analog to digital and using digital processing

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Amplitude modulation
B	Phase modulation
C	Frequency shift keying
D	Frequency modulation

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Image response
B	Mixer interference
C	Quadrature noise
D	Intermediate interference

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	Mark and Space
B	On and Off
C	High and Low
D	Dot and Dash

30. - G9A11

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

Select	Answer
A	50:50
B	2:1
C	1:1
D	0:0

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 ground reflection losses
B	Shorter Radials
C	Lower feed point impedance
D	Lower radiation resistance

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About 1.5 times as much
B	About 2/3 as much
C	About twice as much
D	About the same

33. - G9D10

Which of the following describes a Beverage antenna?

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

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	All of these choices are correct
B	Post a copy of FCC Part 97.13 in the station
C	Perform a routine RF exposure evaluation
D	Post a copy of OET Bulletin 65 in the station

35. - G0B14

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

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