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

Anonymous User

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

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - T0A11

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

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

2. - T0B03

Under what circumstances is it safe to climb a tower without a helper or observer?

Select	Answer
A	When the work being done is not more than 20 feet above the ground
B	Never
C	When no mechanical work is being performed
D	When no electrical work is being performed

3. - T0C04

What factors affect the RF exposure of people near an amateur station antenna?

Select	Answer
A	All these choices are correct
B	Radiation pattern of the antenna
C	Distance from the antenna to a person
D	Frequency and power level of the RF field

4. - T1A10

What is the Radio Amateur Civil Emergency Service (RACES)?

Select	Answer
A	A radio service using amateur stations for emergency management or civil defense communications
B	All these choices are correct
C	An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
D	A radio service using amateur frequencies for emergency management or civil defense communications

5. - T1B10

Where may SSB phone be used in amateur bands above 50 MHz?

Select	Answer
A	On any band if the power is limited to 25 watts
B	Only on repeaters
C	In at least some segment of all these bands
D	Only in sub-bands allocated to General class or higher licensees

6. - T1C03

What types of international communications are an FCC-licensed amateur radio station permitted to make?

Select	Answer
A	Communications incidental to conducting business or remarks of a personal nature
B	Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character
C	Any communications that would be permitted by an international broadcast station
D	Only communications incidental to contest exchanges; all other communications are prohibited

7. - T1D03

When is it permissible to transmit messages encoded to obscure their meaning?

Select	Answer
A	Only when transmitting control commands to space stations or radio control craft
B	Only when transmitting certain approved digital codes
C	Only during contests
D	Never

8. - T1E10

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

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

9. - T1F04

What language may you use for identification when operating in a phone sub-band?

Select	Answer
A	Any language recognized by the ITU
B	English, French, or Spanish
C	Any language recognized by the United Nations
D	English

10. - T2A10

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

Select	Answer
A	A list of operating schedules
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 available net frequencies

11. - T2B07

How can you join a digital repeater’s “talkgroup”?

Select	Answer
A	Register your radio with the local FCC office
B	Program your radio with the group’s ID or code
C	Sign your call after the courtesy tone
D	Join the repeater owner’s club

12. - T2C02

Which of the following are typical duties of a Net Control Station?

Select	Answer
A	Choose the regular net meeting time and frequency
B	Call the net to order and direct communications between stations checking in
C	Ensure that all stations checking into the net are properly licensed for operation on the net frequency
D	All these choices are correct

13. - T3A09

Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

Select	Answer
A	Digital modes are unusable
B	FM voice is unusable
C	Both the transmitting and receiving antennas must be of the same polarization
D	Either vertically or horizontally polarized antennas may be used for transmission or reception

14. - T3B01

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

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

15. - T3C05

Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

Select	Answer
A	Doppler shift
B	Faraday rotation
C	Knife-edge diffraction
D	Quantum tunneling

16. - T4A11

Where should the negative power return of a mobile transceiver be connected in a vehicle?

Select	Answer
A	At the 12 volt battery chassis ground
B	Through the transceiver’s mounting bracket
C	To any metal part of the vehicle
D	At the antenna mount

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	5000 Hz
D	500 Hz

18. - T5A03

What is the name for the flow of electrons in an electric circuit?

Select	Answer
A	Capacitance
B	Current
C	Voltage
D	Resistance

19. - T5B04

Which is equal to one microvolt?

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

20. - T5C10

How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

Select	Answer
A	4.8 watts
B	30 watts
C	0.208 watts
D	14.5 watts

21. - T5D06

What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

Select	Answer
A	16 ohms
B	48 ohms
C	8 ohms
D	3 ohms

22. - T6A01

What electrical component opposes the flow of current in a DC circuit?

Select	Answer
A	Inductor
B	Transformer
C	Resistor
D	Inverter

23. - T6B04

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

Select	Answer
A	Pentagrid converter
B	Alternator
C	Triode
D	Transistor

24. - T6C09

What is component 4 in figure T-2?

Select	Answer
A	Transformer
B	Potentiometer
C	Variable inductor
D	Double-pole switch

25. - T6D05

What type of circuit controls the amount of voltage from a power supply?

Select	Answer
A	Regulator
B	Filter
C	Phase inverter
D	Oscillator

26. - T7A01

Which term describes the ability of a receiver to detect the presence of a signal?

Select	Answer
A	Selectivity
B	Total Harmonic Distortion
C	Sensitivity
D	Linearity

27. - T7B02

What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?

Select	Answer
A	The receiver is unable to reject strong signals outside the AM or FM band
B	The audio amplifier of the transmitter is overloaded
C	The microphone gain of the transmitter is turned up too high
D	The deviation of an FM transmitter is set too low

28. - T7C06

What does an SWR reading of 4:1 indicate?

Select	Answer
A	Impedance mismatch
B	Loss of -4 dB
C	Good impedance match
D	Gain 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 series
C	In quadrature
D	In phase

30. - T8A03

Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

Select	Answer
A	FM
B	SSB
C	PM
D	DRM

31. - T8B06

Which of the following are inputs to a satellite tracking program?

Select	Answer
A	The Keplerian elements
B	All these choices are correct
C	The satellite transmitted power
D	The last observed time of zero Doppler shift

32. - T8C02

Which of these items would be useful for a hidden transmitter hunt?

Select	Answer
A	Calibrated SWR meter
B	All these choices are correct
C	A directional antenna
D	A calibrated noise bridge

33. - T8D02

What is a “talkgroup” on a DMR repeater?

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

34. - T9A12

What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?

Select	Answer
A	It eliminates distortion caused by reflected signals
B	It has more gain than a 1/4-wavelength antenna
C	It radiates at a very high angle
D	It has 10 times the power gain of a 1/4 wavelength whip

35. - T9B03

Why is coaxial cable the most common feed line for amateur radio antenna systems?

Select	Answer
A	It has less loss than any other type of feed line
B	It is easy to use and requires few special installation considerations
C	It can handle more power than any other type of feed line
D	It is less expensive than any other type of feed line

Figure T-2