US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

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US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

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1. - T0A11

What hazard exists in a power supply immediately after turning it off?

Select	Answer
A	Leakage flux in the power transformer
B	Voltage transients from kickback diodes
C	Circulating currents in the dc filter
D	Charge stored in filter capacitors

2. - T0B07

Which of the following is an important safety rule to remember when using a crank-up tower?

Select	Answer
A	This type of tower must not be climbed unless it is retracted, or mechanical safety locking devices have been installed
B	This type of tower must never be grounded
C	All these choices are correct
D	This type of tower must never be painted

3. - T0C10

Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

Select	Answer
A	It takes into account the thermal effects of the final amplifier
B	It affects the average exposure to radiation
C	It takes into account the antenna feed line loss
D	It affects the peak exposure to radiation

4. - T1A05

What proves that the FCC has issued an operator/primary license grant?

Select	Answer
A	An email notification from the NCVEC granting the license
B	The license appears in the FCC ULS database
C	A printed copy of the certificate of successful completion of examination
D	All these choices are correct

5. - T1B02

Which amateurs may contact the International Space Station (ISS) on VHF bands?

Select	Answer
A	Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
B	Any amateur holding a Technician class or higher license
C	Any amateur holding a General class or higher license who has applied for and received approval from NASA
D	Any amateur holding a General class or higher license

6. - T1C06

From which of the following locations may an FCC-licensed amateur station transmit?

Select	Answer
A	From within any country that belongs to the International Telecommunication Union
B	From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
C	From any vessel or craft located in international waters and documented or registered in the United States
D	From within any country that is a member of the United Nations

7. - T1D01

With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?

Select	Answer
A	Any country banned from such communications by the International Amateur Radio Union (IARU)
B	Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications
C	Any country banned from making such communications by the American Radio Relay League (ARRL)
D	Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications

8. - T1E07

When the control operator is not the station licensee, who is responsible for the proper operation of the station?

Select	Answer
A	The control operator and the station licensee
B	All licensed amateurs who are present at the operation
C	Only the control operator
D	Only the station licensee

9. - T1F10

Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules?

Select	Answer
A	The control operator of the repeater
B	Both the originating station and the repeater owner
C	The control operator of the originating station
D	The owner of the repeater

10. - T2A03

What is a common repeater frequency offset in the 70 cm band?

Select	Answer
A	Plus or minus 5 MHz
B	Plus or minus 500 kHz
C	Plus or minus 600 kHz
D	Plus or minus 1 MHz

11. - T2B09

Why are simplex channels designated in the VHF/UHF band plans?

Select	Answer
A	So stations within range of each other can communicate without tying up a repeater
B	So stations with simple transmitters can access the repeater without automated offset
C	For working DX only
D	For contest operation

12. - T2C03

What technique is used to ensure that voice messages containing unusual words are received correctly?

Select	Answer
A	Send the words by voice and Morse code
B	Speak very loudly into the microphone
C	Spell the words using a standard phonetic alphabet
D	All these choices are correct

13. - T3A03

What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands?

Select	Answer
A	Horizontal
B	Vertical
C	Left-hand circular
D	Right-hand circular

14. - T3B08

What frequency range is referred to as VHF?

Select	Answer
A	300 MHz to 3000 MHz
B	30 kHz to 300 kHz
C	300 kHz to 3000 kHz
D	30 MHz to 300 MHz

15. - T3C01

Why are simplex UHF signals rarely heard beyond their radio horizon?

Select	Answer
A	UHF signals are absorbed by the ionospheric D region
B	FCC regulations prohibit them from going more than 50 miles
C	They are too weak to go very far
D	UHF signals are usually not propagated by the ionosphere

16. - T4A05

Where should an RF power meter be installed?

Select	Answer
A	In the feed line, between the transmitter and antenna
B	In the power supply cable, as close as possible to the radio
C	In parallel with the push-to-talk line and the antenna
D	At the power supply output

17. - T4B06

Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

Select	Answer
A	The bandwidth selection
B	The tone squelch
C	The RIT or Clarifier
D	The AGC or limiter

18. - T5A07

Why are metals generally good conductors of electricity?

Select	Answer
A	They have many free protons
B	They have relatively high density
C	All these choices are correct
D	They have many free electrons

19. - T5B03

Which is equal to one kilovolt?

Select	Answer
A	One one-thousandth of a volt
B	One hundred volts
C	One million volts
D	One thousand volts

20. - T5C02

What is the unit of capacitance?

Select	Answer
A	The volt
B	The ohm
C	The farad
D	The henry

21. - T5D09

What is the current through a 24-ohm resistor connected across 240 volts?

Select	Answer
A	10 amperes
B	216 amperes
C	0.1 amperes
D	24,000 amperes

22. - T6A10

Which of the following battery chemistries is rechargeable?

Select	Answer
A	Lithium-ion
B	All these choices are correct
C	Lead-acid
D	Nickel-metal hydride

23. - T6B11

What is the term that describes a device's ability to amplify a signal?

Select	Answer
A	Gain
B	Forward resistance
C	Forward voltage drop
D	On resistance

24. - T6C04

What is component 3 in figure T-1?

Select	Answer
A	Lamp
B	Ground symbol
C	Resistor
D	Transistor

25. - T6D02

What is a relay?

Select	Answer
A	A current controlled amplifier
B	An electrically-controlled switch
C	A pass transistor
D	An inverting amplifier

26. - T7A05

What is the name of a circuit that generates a signal at a specific frequency?

Select	Answer
A	Low-pass filter
B	Oscillator
C	Phase modulator
D	Reactance modulator

27. - T7B11

What is a symptom of RF feedback in a transmitter or transceiver?

Select	Answer
A	Frequent blowing of power supply fuses
B	The transmitter will not stay on the desired frequency
C	Reports of garbled, distorted, or unintelligible voice transmissions
D	Excessive SWR at the antenna connection

28. - T7C05

Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?

Select	Answer
A	Because power supplies cannot supply enough current at high SWR
B	To lower the SWR on the transmission line
C	To comply with FCC rules on spectral purity
D	To protect the output amplifier transistors

29. - T7D04

Which instrument is used to measure electric current?

Select	Answer
A	An ohmmeter
B	An ammeter
C	An electrometer
D	A voltmeter

30. - T8A04

Which type of modulation is commonly used for VHF and UHF voice repeaters?

Select	Answer
A	AM
B	SSB
C	FM or PM
D	PSK

31. - T8B05

What is a satellite beacon?

Select	Answer
A	An indicator light that shows where to point your antenna
B	A reflective surface on the satellite
C	A transmission from a satellite that contains status information
D	The primary transmit antenna on the satellite

32. - T8C04

Which of the following is good procedure when contacting another station in a contest?

Select	Answer
A	Send only the minimum information needed for proper identification and the contest exchange
B	Sign only the last two letters of your call if there are many other stations calling
C	All these choices are correct
D	Contact the station twice to be sure that you are in his log

33. - T8D02

What is a “talkgroup” on a DMR repeater?

Select	Answer
A	A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
B	A group of operators sharing common interests
C	A way for groups of users to share a channel at different times without hearing other users on the channel
D	A net that meets at a specified time

34. - T9A02

Which of the following describes a type of antenna loading?

Select	Answer
A	Electrically lengthening by inserting inductors in radiating elements
B	Installing a spring in the base of a mobile vertical antenna to make it more flexible
C	Inserting a resistor in the radiating portion of the antenna to make it resonant
D	Strengthening the radiating elements of a beam antenna to better resist wind damage

35. - T9B11

Which of the following types of feed line has the lowest loss at VHF and UHF?

Select	Answer
A	50-ohm flexible coax
B	Air-insulated hardline
C	75-ohm flexible coax
D	Multi-conductor unbalanced cable

Figure T-1