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. - T0A12

Which of the following precautions should be taken when measuring high voltages with a voltmeter?

Select	Answer
A	Ensure that the voltmeter is set to the correct frequency
B	Ensure that the voltmeter and leads are rated for use at the voltages to be measured
C	Ensure that the voltmeter has very low impedance
D	Ensure that the circuit is grounded through the voltmeter

2. - T0B05

What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

Select	Answer
A	Prevent loosening of the turnbuckle from vibration
B	Provide a ground path for lightning strikes
C	Provide an ability to measure for proper tensioning
D	Secure the guy line if the turnbuckle breaks

3. - T0C03

How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

Select	Answer
A	It decreases by 50 percent
B	There is no adjustment allowed for lower duty cycle
C	It increases by a factor of 3
D	It increases by a factor of 2

4. - T1A04

How many operator/primary station license grants may be held by any one person?

Select	Answer
A	One
B	One for each band on which the person plans to operate
C	One for each permanent station location from which the person plans to operate
D	No more than two

5. - T1B09

Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

Select	Answer
A	To allow for transmitter frequency drift
B	All these choices are correct
C	To allow for calibration error in the transmitter frequency display
D	So that modulation sidebands do not extend beyond the band edge

6. - T1C09

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

Select	Answer
A	Ten years
B	Five years
C	Three years
D	Two 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	When broadcasting communications to or from the space shuttle
C	Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
D	Never

8. - T1E02

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

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

9. - T1F06

Which of the following self-assigned indicators are acceptable when using a phone transmission?

Select	Answer
A	KL7CC slash W3
B	KL7CC slant W3
C	All these choices are correct
D	KL7CC stroke W3

10. - T2A01

What is a common repeater frequency offset in the 2 meter band?

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

11. - T2B13

What is the purpose of a squelch function?

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

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

13. - T3A01

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

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

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 travel at different speeds
D	They are in parallel

15. - T3C03

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

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

16. - T4A12

What is an electronic keyer?

Select	Answer
A	An interlock to prevent unauthorized use of a radio
B	A device for switching antennas from transmit to receive
C	A device that assists in manual sending of Morse code
D	A device for voice activated switching from receive to transmit

17. - T4B08

What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?

Select	Answer
A	Increases the amount of offset between receive and transmit frequencies
B	Permits monitoring several modes at once by selecting a separate filter for each mode
C	Increases the number of frequencies that can be stored in memory
D	Permits noise or interference reduction by selecting a bandwidth matching the mode

18. - T5A11

What type of current flow is opposed by resistance?

Select	Answer
A	Direct current
B	All these choices are correct
C	RF current
D	Alternating current

19. - T5B01

How many milliamperes is 1.5 amperes?

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

20. - T5C08

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

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

21. - T5D11

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

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

22. - T6A09

What electrical component is used to protect other circuit components from current overloads?

Select	Answer
A	All these choices are correct
B	Varactor
C	Fuse
D	Thyratron

23. - T6B08

What does the abbreviation FET stand for?

Select	Answer
A	Frequency Emission Transmitter
B	Fast Electron Transistor
C	Field Effect Transistor
D	Free Electron Transmitter

24. - T6C08

What is component 9 in figure T-2?

Select	Answer
A	Variable resistor
B	Variable transformer
C	Variable capacitor
D	Variable inductor

25. - T6D06

What component changes 120 V AC power to a lower AC voltage for other uses?

Select	Answer
A	Diode
B	Transformer
C	Transistor
D	Variable capacitor

26. - T7A04

Which term describes the ability of a receiver to discriminate between multiple signals?

Select	Answer
A	Discrimination ratio
B	Harmonic distortion
C	Sensitivity
D	Selectivity

27. - T7B07

Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

Select	Answer
A	Installing a band-reject filter
B	Using double-shielded coaxial cable
C	Installing bypass capacitors on the microphone cable
D	Installing an RF preamplifier

28. - T7C01

What is the primary purpose of a dummy load?

Select	Answer
A	To prevent transmitting signals over the air when making tests
B	To improve the signal-to-noise ratio of a receiver
C	To improve the efficiency of an antenna
D	To prevent over-modulation of a transmitter

29. - T7D04

Which instrument is used to measure electric current?

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

30. - T8A04

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

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

31. - T8B11

Who may receive telemetry from a space station?

Select	Answer
A	A licensed radio amateur who has registered for an access code from AMSAT
B	A licensed radio amateur who has been certified by the protocol developer
C	A licensed radio amateur with a transmitter equipped for interrogating the satellite
D	Anyone

32. - T8C06

How is over the air access to IRLP nodes accomplished?

Select	Answer
A	By entering the proper internet password
B	By using CTCSS tone codes
C	By obtaining a password that is sent via voice to the node
D	By using DTMF signals

33. - T8D13

What is FT8?

Select	Answer
A	An eight channel multiplex mode for FM repeaters
B	A digital mode capable of low signal-to-noise operation
C	A digital slow-scan TV mode with forward error correction and automatic color compensation
D	A wideband FM voice mode

34. - T9A10

In which direction does a half-wave dipole antenna radiate the strongest signal?

Select	Answer
A	Equally in all directions
B	In the direction of the feed line
C	Off the ends of the antenna
D	Broadside to the antenna

35. - T9B08

Which of the following is a source of loss in coaxial feed line?

Select	Answer
A	High SWR
B	Water intrusion into coaxial connectors
C	All these choices are correct
D	Multiple connectors in the line

Figure T-2