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	Charge stored in filter capacitors
C	Voltage transients from kickback diodes
D	Circulating currents in the dc filter

2. - T0B11

Which of the following establishes grounding requirements for an amateur radio tower or antenna?

Select	Answer
A	Local electrical codes
B	FCC Part 97 rules
C	FAA tower lighting regulations
D	UL recommended practices

3. - T0C07

What hazard is created by touching an antenna during a transmission?

Select	Answer
A	Radiation poisoning
B	Electrocution
C	All these choices are correct
D	RF burn to skin

4. - T1A11

When is willful interference to other amateur radio stations permitted?

Select	Answer
A	At no time
B	When making short test transmissions
C	To stop another amateur station that is breaking the FCC rules
D	At any time, stations in the Amateur Radio Service are not protected from willful interference

5. - T1B04

Which amateur band includes 146.52 MHz?

Select	Answer
A	2 meters
B	70 centimeters
C	6 meters
D	20 meters

6. - T1C09

What is the grace period for renewal if an amateur license expires?

Select	Answer
A	Ten years
B	Two years
C	Three years
D	Five years

7. - T1D09

When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available?

Select	Answer
A	When such communications are directly related to the immediate safety of human life or protection of property
B	Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
C	Never
D	When broadcasting communications to or from the space shuttle

8. - T1E09

Which of the following are required for remote control operation?

Select	Answer
A	The control operator must indirectly manipulate the controls
B	All these choices are correct
C	A control operator is required at all times
D	The control operator must be at the control point

9. - T1F03

When are you required to transmit your assigned call sign?

Select	Answer
A	At least every 15 minutes during and at the end of a communication
B	At least once during each transmission
C	At least every 10 minutes during and at the end of a communication
D	At the beginning of each contact, and every 10 minutes thereafter

10. - T2A09

Which of the following indicates that a station is listening on a repeater and looking for a contact?

Select	Answer
A	“CQ CQ” followed by the repeater’s call sign
B	The station’s call sign followed by the word “monitoring”
C	“QSY” followed by your call sign
D	The repeater call sign followed by the station’s call sign

11. - T2B04

Which of the following could be the reason you are unable to access a repeater whose output you can hear?

Select	Answer
A	All these choices are correct
B	You are using the wrong DCS code
C	You are using the wrong CTCSS tone
D	Improper transceiver offset

12. - T2C04

What is RACES?

Select	Answer
A	A radio contest held in a short period, sometimes called a “sprint”
B	An international radio experimentation society
C	An emergency organization combining amateur radio and citizens band operators and frequencies
D	An FCC part 97 amateur radio service for civil defense communications during national emergencies

13. - T3A02

What is the effect of vegetation on UHF and microwave signals?

Select	Answer
A	Polarization rotation
B	Absorption
C	Amplification
D	Knife-edge diffraction

14. - T3B01

What is the relationship between the electric and magnetic fields of an electromagnetic wave?

Select	Answer
A	They revolve in opposite directions
B	They are in parallel
C	They are at right angles
D	They travel at different speeds

15. - T3C03

What is a characteristic of VHF signals received via auroral backscatter?

Select	Answer
A	They are distorted and signal strength varies considerably
B	They are generally strongest when your antenna is aimed west
C	They are often received from 10,000 miles or more
D	They occur only during winter nighttime hours

16. - T4A01

Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

Select	Answer
A	24.0 volts at 12 amperes
B	13.8 volts at 12 amperes
C	13.8 volts at 4 amperes
D	24.0 volts at 4 amperes

17. - T4B02

Which of the following can be used to enter a transceiver’s operating frequency?

Select	Answer
A	All these choices are correct
B	The Automatic Frequency Control
C	The CTCSS or DTMF encoder
D	The keypad or VFO knob

18. - T5A02

Electrical power is measured in which of the following units?

Select	Answer
A	Watt-hours
B	Amperes
C	Volts
D	Watts

19. - T5B08

Which is equal to 1,000,000 picofarads?

Select	Answer
A	1,000,000,000 microfarads
B	0.001 microfarads
C	1000 microfarads
D	1 microfarad

20. - T5C05

What is the unit of impedance?

Select	Answer
A	The coulomb
B	The ohm
C	The ampere
D	The volt

21. - T5D13

In which type of circuit is DC current the same through all components?

Select	Answer
A	Parallel
B	Branch
C	Resonant
D	Series

22. - T6A11

Which of the following battery chemistries is not rechargeable?

Select	Answer
A	Lead-acid
B	Lithium-ion
C	Nickel-cadmium
D	Carbon-zinc

23. - T6B04

Which of the following components can consist of three regions of semiconductor material?

Select	Answer
A	Triode
B	Transistor
C	Alternator
D	Pentagrid converter

24. - T6C11

What is component 4 in figure T-3?

Select	Answer
A	Antenna
B	Dummy load
C	Ground
D	Transmitter

25. - T6D08

Which of the following is combined with an inductor to make a resonant circuit?

Select	Answer
A	Resistor
B	Zener diode
C	Potentiometer
D	Capacitor

26. - T7A03

Which of the following is used to convert a signal from one frequency to another?

Select	Answer
A	Inverter
B	Mixer
C	Phase splitter
D	Amplifier

27. - T7B03

Which of the following can cause radio frequency interference?

Select	Answer
A	Harmonics
B	Spurious emissions
C	All these choices are correct
D	Fundamental overload

28. - T7C07

What happens to power lost in a feed line?

Select	Answer
A	It is converted into heat
B	It is radiated as harmonics
C	It distorts the signal
D	It increases the SWR

29. - T7D01

Which instrument would you use to measure electric potential?

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

30. - T8A04

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

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

31. - T8B03

Which of the following are provided by satellite tracking programs?

Select	Answer
A	Maps showing the real-time position of the satellite track over Earth
B	All these choices are correct
C	The apparent frequency of the satellite transmission, including effects of Doppler shift
D	The time, azimuth, and elevation of the start, maximum altitude, and end of a pass

32. - T8C09

Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

Select	Answer
A	D-STAR
B	DMR
C	IRLP
D	EchoLink

33. - T8D05

Which of the following is an application of APRS?

Select	Answer
A	Showing automatically the number of packets transmitted via PACTOR during a specific time interval
B	Providing real-time tactical digital communications in conjunction with a map showing the locations of stations
C	Providing voice over internet connection between repeaters
D	Providing information on the number of stations signed into a repeater

34. - T9A09

What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

Select	Answer
A	112
B	236
C	50
D	6

35. - T9B11

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

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

Figure T-3