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

2. - T0B04

Which of the following is an important safety precaution to observe when putting up an antenna tower?

Select	Answer
A	Look for and stay clear of any overhead electrical wires
B	Wear a ground strap connected to your wrist at all times
C	Insulate the base of the tower to avoid lightning strikes
D	All these choices are correct

3. - T0C11

What is the definition of duty cycle during the averaging time for RF exposure?

Select	Answer
A	The percentage of time that a transmitter is transmitting
B	The percentage of time that a transmitter is not transmitting
C	The difference between the PEP and average power output of a transmitter
D	The difference between the lowest power output and the highest power output of a transmitter

4. - T1A03

What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

Select	Answer
A	All these choices are correct
B	It is required when in contact with foreign stations
C	It is encouraged
D	It is required when transmitting emergency messages

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

6. - T1C01

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

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

7. - T1D04

Under what conditions is an amateur station authorized to transmit music using a phone emission?

Select	Answer
A	When the music produces no spurious emissions
B	When the music is transmitted above 1280 MHz
C	When incidental to an authorized retransmission of manned spacecraft communications
D	When transmissions are limited to less than three minutes per hour

8. - T1E02

Who may be the control operator of a station communicating through an amateur satellite or space station?

Select	Answer
A	Any amateur allowed to transmit on the satellite uplink frequency
B	Only an Amateur Extra Class operator
C	A General class or higher licensee with a satellite operator certification
D	Only an Amateur Extra Class operator who is also an AMSAT member

9. - T1F11

Which of the following is a requirement for the issuance of a club station license grant?

Select	Answer
A	The trustee must have an Amateur Extra Class operator license grant
B	The club must be registered with the American Radio Relay League
C	All these choices are correct
D	The club must have at least four members

10. - T2A03

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

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

11. - T2B05

What would cause your FM transmission audio to be distorted on voice peaks?

Select	Answer
A	You are talking too loudly
B	You need to talk louder
C	Your repeater offset is inverted
D	Your transmit power is too high

12. - T2C04

What is RACES?

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

13. - T3A01

Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?

Select	Answer
A	All these choices are correct
B	Multipath propagation cancels or reinforces signals
C	The signal path encounters different concentrations of water vapor
D	VHF ionospheric propagation is very sensitive to path length

14. - T3B03

What are the two components of a radio wave?

Select	Answer
A	Ionizing and non-ionizing radiation
B	Voltage and current
C	Electric and magnetic fields
D	Impedance and reactance

15. - T3C02

What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

Select	Answer
A	There is less atmospheric interference (static) on HF
B	HF accommodates wider bandwidth signals
C	HF antennas are generally smaller
D	Long-distance ionospheric propagation is far more common on HF

16. - T4A03

Why are short, heavy-gauge wires used for a transceiver’s DC power connection?

Select	Answer
A	To avoid RF interference
B	All these choices are correct
C	To minimize voltage drop when transmitting
D	To provide a good counterpoise for the antenna

17. - T4B01

What is the effect of excessive microphone gain on SSB transmissions?

Select	Answer
A	Frequency instability
B	Increased SWR
C	All these choices are correct
D	Distorted transmitted audio

18. - T5A01

Electrical current is measured in which of the following units?

Select	Answer
A	Amperes
B	Watts
C	Volts
D	Ohms

19. - T5B01

How many milliamperes is 1.5 amperes?

Select	Answer
A	15 milliamperes
B	150 milliamperes
C	1500 milliamperes
D	15,000 milliamperes

20. - T5C04

What is the unit of inductance?

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

21. - T5D10

What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?

Select	Answer
A	1.5 volts
B	0.25 volts
C	2.5 volts
D	1 volt

22. - T6A03

What electrical parameter is controlled by a potentiometer?

Select	Answer
A	Capacitance
B	Inductance
C	Field strength
D	Resistance

23. - T6B03

Which of these components can be used as an electronic switch?

Select	Answer
A	Transistor
B	Potentiometer
C	Varistor
D	Thermistor

24. - T6C10

What is component 3 in figure T-3?

Select	Answer
A	Connector
B	Variable inductor
C	Meter
D	Variable capacitor

25. - T6D04

Which of the following displays an electrical quantity as a numeric value?

Select	Answer
A	Transistor
B	Relay
C	Potentiometer
D	Meter

26. - T7A11

Where is an RF preamplifier installed?

Select	Answer
A	Between the antenna and receiver
B	At the output of the receiver audio amplifier
C	Between the transmitter and the antenna tuner
D	At the output of the transmitter power amplifier

27. - T7B03

Which of the following can cause radio frequency interference?

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

28. - T7C06

What does an SWR reading of 4:1 indicate?

Select	Answer
A	Gain of +4 dB
B	Impedance mismatch
C	Good impedance match
D	Loss of -4 dB

29. - T7D03

When configured to measure current, how is a multimeter connected to a component?

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

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. - T8B10

What is a LEO satellite?

Select	Answer
A	A satellite in low earth orbit
B	A sun synchronous satellite
C	A highly elliptical orbit satellite
D	A satellite in low energy operation mode

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	A frame compression scheme for TV signals
B	An analog fast-scan color TV signal
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	236
B	112
C	6
D	50

35. - T9B04

What is the major function of an antenna tuner (antenna coupler)?

Select	Answer
A	It automatically selects the proper antenna for the frequency band being used
B	It helps a receiver automatically tune in weak stations
C	It matches the antenna system impedance to the transceiver's output impedance
D	It allows an antenna to be used on both transmit and receive

Figure T-3