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. - T0B06

What is the minimum safe distance from a power line to allow when installing an antenna?

Select	Answer
A	Enough so that if the antenna falls, no part of it can come closer than 10 feet to the power wires
B	Add the height of the antenna to the height of the power line and multiply by a factor of 1.5
C	The height of the power line above ground
D	1/2 wavelength at the operating frequency

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 peak exposure to radiation
C	It takes into account the antenna feed line loss
D	It affects the average exposure to radiation

4. - T1A06

What is the FCC Part 97 definition of a beacon?

Select	Answer
A	An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
B	A government transmitter marking the amateur radio band edges
C	A bulletin sent by the FCC to announce a national emergency
D	A continuous transmission of weather information authorized in the amateur bands by the National Weather Service

5. - T1B07

Which of the following VHF/UHF band segments are limited to CW only?

Select	Answer
A	All these choices are correct
B	902.0 MHz to 902.1 MHz
C	50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz
D	219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz

6. - T1C01

For which license classes are new licenses currently available from the FCC?

Select	Answer
A	Technician, Technician Plus, General, Amateur Extra
B	Novice, Technician Plus, General, Advanced
C	Technician, General, Amateur Extra
D	Novice, Technician, General, Amateur Extra

7. - T1D10

How does the FCC define broadcasting for the Amateur Radio Service?

Select	Answer
A	Any transmission made by the licensed station
B	Transmissions intended for reception by the general public
C	Transmission of messages directed only to amateur operators
D	Two-way transmissions by amateur stations

8. - T1E06

When, under normal circumstances, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment?

Select	Answer
A	As part of a multi-operator contest team
B	At no time
C	When using a club station whose trustee holds an Amateur Extra Class license
D	When designated as the control operator by an Amateur Extra Class licensee

9. - T1F07

Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

Select	Answer
A	The person must be a U.S. citizen
B	All these choices are correct
C	The licensed control operator must do the station identification
D	The foreign station must be in a country with which the U.S. has a third party agreement

10. - T2A10

What is a band plan, beyond the privileges established by the FCC?

Select	Answer
A	A list of available net frequencies
B	A voluntary guideline for using different modes or activities within an amateur band
C	A plan devised by a club to indicate frequency band usage
D	A list of operating schedules

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

12. - T2C04

What is RACES?

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

13. - T3A06

What is the meaning of the term “picket fencing”?

Select	Answer
A	Local vs long-distance communications
B	A type of ground system used with vertical antennas
C	Rapid flutter on mobile signals due to multipath propagation
D	Alternating transmissions during a net operation

14. - T3B01

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

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

15. - T3C09

What is generally the best time for long-distance 10 meter band propagation via the F region?

Select	Answer
A	From dawn to shortly after sunset during periods of low sunspot activity
B	From shortly after sunset to dawn during periods of high sunspot activity
C	From shortly after sunset to dawn during periods of low sunspot activity
D	From dawn to shortly after sunset during periods of high sunspot activity

16. - T4A06

What signals are used in a computer-radio interface for digital mode operation?

Select	Answer
A	NMEA GPS location and DC power
B	Receive audio, transmit audio, and transmitter keying
C	Antenna and RF power
D	Receive and transmit mode, status, and location

17. - T4B10

Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception?

Select	Answer
A	2400 Hz
B	1000 Hz
C	500 Hz
D	5000 Hz

18. - T5A08

Which of the following is a good electrical insulator?

Select	Answer
A	Mercury
B	Glass
C	Aluminum
D	Copper

19. - T5B09

Which decibel value most closely represents a power increase from 5 watts to 10 watts?

Select	Answer
A	2 dB
B	3 dB
C	5 dB
D	10 dB

20. - T5C08

What is the formula used to calculate electrical power (P) in a DC circuit?

Select	Answer
A	P = E / I
B	P = E – I
C	P = I + E
D	P = I  E

21. - T5D04

What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

Select	Answer
A	30 ohms
B	93 ohms
C	270 ohms
D	3 ohms

22. - T6A02

What type of component is often used as an adjustable volume control?

Select	Answer
A	Power resistor
B	Potentiometer
C	Fixed resistor
D	Transformer

23. - T6B09

What are the names for the electrodes of a diode?

Select	Answer
A	Gate and base
B	Anode and cathode
C	Source and drain
D	Plus and minus

24. - T6C06

What is component 6 in figure T-2?

Select	Answer
A	Transistor
B	Regulator IC
C	Capacitor
D	Resistor

25. - T6D02

What is a relay?

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

26. - T7A10

What device increases the transmitted output power from a transceiver?

Select	Answer
A	An impedance network
B	A voltage divider
C	All these choices are correct
D	An RF power amplifier

27. - T7B05

How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

Select	Answer
A	Block the amateur signal with a filter at the antenna input of the affected receiver
B	Switch the transmitter to a narrow-band mode
C	Switch the transmitter from FM to SSB
D	Block the interfering signal with a filter on the amateur transmitter

28. - T7C03

What does a dummy load consist of?

Select	Answer
A	A high-gain amplifier and a TR switch
B	A 50-ohm reactance used to terminate a transmission line
C	A low-voltage power supply and a DC relay
D	A non-inductive resistor mounted on a heat sink

29. - T7D02

How is a voltmeter connected to a component to measure applied voltage?

Select	Answer
A	In quadrature
B	In series
C	In phase
D	In parallel

30. - T8A06

Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

Select	Answer
A	Inverted sideband
B	Upper sideband
C	Lower sideband
D	Suppressed sideband

31. - T8B12

Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

Select	Answer
A	Check your signal strength report in the telemetry data
B	Listen for distortion on your downlink signal
C	All these choices are correct
D	Your signal strength on the downlink should be about the same as the beacon

32. - T8C03

What operating activity involves contacting as many stations as possible during a specified period?

Select	Answer
A	Contesting
B	Net operations
C	Simulated emergency exercises
D	Public service events

33. - T8D04

What type of transmission is indicated by the term "NTSC?"

Select	Answer
A	An analog fast-scan color TV signal
B	A frame compression scheme for TV signals
C	A special mode for satellite uplink
D	A Normal Transmission mode in Static Circuit

34. - T9A09

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

Select	Answer
A	50
B	6
C	236
D	112

35. - T9B01

What is a benefit of low SWR?

Select	Answer
A	All these choices are correct
B	Less antenna wear
C	Reduced television interference
D	Reduced signal loss

Figure T-2