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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	1875 kHz
B	4005 kHz
C	3750 kHz
D	3900 kHz

2. - G1B05

When may music be transmitted by an amateur station?

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

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	3 kHz
B	5.6 kHz
C	2.8 kHz
D	1.8 kHz

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
B	There are no requirements other than being able to show a copy of the expired license
C	The applicant must pass the current element 2 exam
D	They must have a letter from the FCC showing they once held an amateur or commercial license

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 messages are not encrypted
C	When messages are encrypted
D	When under automatic control

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It occupies less bandwidth
B	It provides more power output
C	The received signal is more natural sounding
D	It allows "hands free" operation

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Contest operations must always yield to non-contest use of frequencies
B	Except during FCC declared emergencies, no one has priority access to frequencies
C	QSOs in progress always have priority
D	Nets always have priority

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Listening for novice stations
B	Listening only for a specific station or stations
C	Closing station now
D	Operating full break-in

9. - G2D06

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

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

10. - G2E11

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

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

11. - G3A04

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

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

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	The signal might be cancelled causing severe attenuation
B	A well-defined echo might be heard
C	Signal strength increased by 3 dB
D	Periodic fading approximately every 10 seconds

13. - G3C05

Why is long distance communication on the 40-meter, 60-meter, 80-meter and 160-meter bands more difficult during the day?

Select	Answer
A	The F layer is unstable during daylight hours
B	The E layer is unstable during daylight hours
C	The D layer absorbs signals at these frequencies during daylight hours
D	The F layer absorbs signals at these frequencies during daylight hours

14. - G4A07

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

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

15. - G4B09

Which of the following can be determined with a field strength meter?

Select	Answer
A	The radiation pattern of an antenna
B	The presence and amount of amplitude distortion of a transmitter
C	The presence and amount of phase distortion of a transmitter
D	The radiation resistance of an antenna

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

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times more powerful
B	It is 20 times less powerful
C	It is 100 times more powerful
D	It is 10 times less powerful

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 increase the "Q" of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	No current can flow through the circuit
B	The source can deliver maximum power to the load
C	The source delivers minimum power to the load
D	The electrical load is shorted

20. - G5B04

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

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

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	0.17 ohms
C	10000 ohms
D	80 ohms

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its enhancement and depletion modes
B	Its active region (between the cutoff and saturation regions)
C	Its saturation and cutoff regions
D	Its peak and valley current points

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for RF amplification
B	Low power consumption
C	High power handling capability
D	Better suited for power supply regulation

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 11
B	Symbol 7
C	Symbol 1
D	Symbol 2

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	16
B	3
C	8
D	6

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	IF filter
B	Balanced modulator
C	RF oscillator
D	Product detector

27. - G8A08

Which of the following is an effect of overmodulation?

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

28. - G8B09

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

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

29. - G8C11

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

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

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

Select	Answer
A	1.5:1
B	You cannot determine SWR from impedance values
C	3:1
D	6:1

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

32. - G9C20

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

Select	Answer
A	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative 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 isometric antenna, dBd refers to a discone antenna

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Polarization diversity
B	Harmonic suppression
C	Wide bandwidth
D	Higher gain per element than a Yagi antenna

34. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

Select	Answer
A	Position the antenna along the edge of a wall to reduce parasitic radiation
B	Make sure that MPE limits are not exceeded in occupied areas
C	Make sure the antenna is properly shielded
D	Locate the antenna close to your operating position to minimize feed line radiation

35. - G0B13

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

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

Figure G7-1