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

2. - T0B08

Which is a proper grounding method for a tower?

Select	Answer
A	A ferrite-core RF choke connected between the tower and ground
B	Separate eight-foot ground rods for each tower leg, bonded to the tower and each other
C	A connection between the tower base and a cold water pipe
D	A single four-foot ground rod, driven into the ground no more than 12 inches from the base

3. - T0C02

At which of the following frequencies does maximum permissible exposure have the lowest value?

Select	Answer
A	1296 MHz
B	440 MHz
C	50 MHz
D	3.5 MHz

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	A printed copy of the certificate of successful completion of examination
C	All these choices are correct
D	The license appears in the FCC ULS database

5. - T1B02

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

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

6. - T1C04

What may happen if the FCC is unable to reach you by email?

Select	Answer
A	Revocation of access to the license record in the FCC system
B	Nothing; there is no such requirement
C	Fine and suspension of operator license
D	Revocation of the station license or suspension of the operator license

7. - T1D08

In which of the following circumstances may the control operator of an amateur station receive compensation for operating that station?

Select	Answer
A	All these choices are correct
B	When the communication is made to obtain emergency information for a local broadcast station
C	When the communication is incidental to classroom instruction at an educational institution
D	When the communication is related to the sale of amateur equipment by the control operator's employer

8. - T1E10

Which of the following is an example of remote control as defined in Part 97?

Select	Answer
A	Repeater operation
B	Operating the station over the internet
C	All these choices are correct
D	Controlling a model aircraft, boat, or car by amateur radio

9. - T1F05

What method of call sign identification is required for a station transmitting phone signals?

Select	Answer
A	Send the call sign using only a phone emission
B	Send the call sign using a CW or phone emission
C	Send the call sign followed by the indicator RPT
D	Send the call sign followed by the indicator R

10. - T2A05

How should you respond to a station calling CQ?

Select	Answer
A	Transmit a signal report followed by your call sign
B	Transmit your call sign followed by the other station’s call sign
C	Transmit the other station’s call sign followed by your call sign
D	Transmit "CQ" followed by the other station’s call sign

11. - T2B13

What is the purpose of a squelch function?

Select	Answer
A	Eliminate parasitic oscillations in an RF amplifier
B	Reduce interference from impulse noise
C	Reduce a CW transmitter's key clicks
D	Mute the receiver audio when a signal is not present

12. - T2C09

Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?

Select	Answer
A	Yes, but only in situations involving the immediate safety of human life or protection of property
B	Yes, but only when part of a FEMA emergency plan
C	No
D	Yes, but only when part of a RACES emergency plan

13. - T3A05

When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?

Select	Answer
A	Change from vertical to horizontal polarization
B	Try to find a path that reflects signals to the repeater
C	Increase the antenna SWR
D	Try the long path

14. - T3B06

What is the formula for converting frequency to approximate wavelength in meters?

Select	Answer
A	Wavelength in meters equals frequency in hertz divided by 300
B	Wavelength in meters equals frequency in hertz multiplied by 300
C	Wavelength in meters equals frequency in megahertz divided by 300
D	Wavelength in meters equals 300 divided by frequency in megahertz

15. - T3C07

What band is best suited for communicating via meteor scatter?

Select	Answer
A	2 meters
B	70 centimeters
C	33 centimeters
D	6 meters

16. - T4A08

Which of the following conductors is preferred for bonding at RF?

Select	Answer
A	Twisted-pair cable
B	Copper braid removed from coaxial cable
C	Steel wire
D	Flat copper strap

17. - T4B10

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

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

18. - T5A09

Which of the following describes alternating current?

Select	Answer
A	Current that alternates between a negative direction and zero
B	Current that alternates between positive and negative directions
C	All these answers are correct
D	Current that alternates between a positive direction and zero

19. - T5B09

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

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

20. - T5C09

How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

Select	Answer
A	138 watts
B	0.7 watts
C	3.8 watts
D	23.8 watts

21. - T5D11

What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

Select	Answer
A	11 volts
B	9 volts
C	1 volt
D	10 volts

22. - T6A06

What type of electrical component stores energy in a magnetic field?

Select	Answer
A	Capacitor
B	Varistor
C	Inductor
D	Diode

23. - T6B03

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

Select	Answer
A	Varistor
B	Potentiometer
C	Thermistor
D	Transistor

24. - T6C01

What is the name of an electrical wiring diagram that uses standard component symbols?

Select	Answer
A	Schematic
B	Flow chart
C	Connector pinout
D	Bill of materials

25. - T6D07

Which of the following is commonly used as a visual indicator?

Select	Answer
A	LED
B	Zener diode
C	Bipolar transistor
D	FET

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

28. - T7C05

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

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

29. - T7D07

Which of the following measurements are made using a multimeter?

Select	Answer
A	All these choices are correct
B	Signal strength and noise
C	Voltage and resistance
D	Impedance and reactance

30. - T8A08

What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

Select	Answer
A	1 kHz
B	6 kHz
C	15 kHz
D	3 kHz

31. - T8B02

What is the impact of using excessive effective radiated power on a satellite uplink?

Select	Answer
A	Possibility of commanding the satellite to an improper mode
B	Overloading the satellite batteries
C	Blocking access by other users
D	Possibility of rebooting the satellite control computer

32. - T8C03

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

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

33. - T8D12

Which of the following best describes an amateur radio mesh network?

Select	Answer
A	An amateur-radio based data network using commercial Wi-Fi equipment with modified firmware
B	An internet linking protocol used to network repeaters
C	A wide-bandwidth digital voice mode employing DMR protocols
D	A satellite communications network using modified commercial satellite TV hardware

34. - T9A04

What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

Select	Answer
A	It is mechanically fragile
B	All these choices are correct
C	It transmits only circularly polarized signals
D	It has low efficiency

35. - T9B06

Which of the following RF connector types is most suitable for frequencies above 400 MHz?

Select	Answer
A	UHF (PL-259/SO-239)
B	DB-25
C	RS-213
D	Type N