US Amateur Radio - Technician (Element 2, 2014-2018) Practice Test

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US Amateur Radio - Technician (Element 2, 2014-2018) Practice Test

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1. - T1A14

What must you do if you are operating on the 23 cm band and learn that you are interfering with a radiolocation station outside the United States?

Select	Answer
A	Change to CW mode, because this would not likely cause interference
B	Stop operating or take steps to eliminate the harmful interference
C	Establish contact with the radiolocation station and ask them to change frequency
D	Nothing, because this band is allocated exclusively to the amateur service

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

3. - T1C04

When are you allowed to operate your amateur station in a foreign country?

Select	Answer
A	When the foreign country authorizes it
B	When there is a mutual agreement allowing third party communications
C	When you are communicating with non-licensed individuals in another country
D	When authorization permits amateur communications in a foreign language

4. - T1D08

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

Select	Answer
A	When the communication is incidental to classroom instruction at an educational institution
B	When engaging in communications on behalf of their employer
C	When re-broadcasting weather alerts during a RACES net
D	When notifying other amateur operators of the availability for sale or trade of apparatus

5. - T1E07

When the control operator is not the station licensee, who is responsible for the proper operation of the station?

Select	Answer
A	Only the station licensee
B	Only the control operator
C	The control operator and the station licensee are equally responsible
D	All licensed amateurs who are present at the operation

6. - T1F04

Which of the following is an acceptable language to use for station identification when operating in a phone sub-band?

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

7. - T2A06

What must an amateur operator do when making on-air transmissions to test equipment or antennas?

Select	Answer
A	State the purpose of the test during the test procedure
B	Properly identify the transmitting station
C	Notify the FCC of the test transmission
D	Make test transmissions only after 10:00 p.m. local time

8. - T2B03

Which of the following describes the muting of receiver audio controlled solely by the presence or absence of an RF signal?

Select	Answer
A	Modulated carrier
B	Carrier squelch
C	CTCSS
D	Tone squelch

9. - T2C01

When do the FCC rules NOT apply to the operation of an amateur station?

Select	Answer
A	When operating under special ARES rules
B	When operating a RACES station
C	Never, FCC rules always apply
D	When operating under special FEMA rules

10. - T3A05

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

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

11. - T3B02

What property of a radio wave is used to describe its polarization?

Select	Answer
A	The orientation of the electric field
B	The ratio of the energy in the magnetic field to the energy in the electric field
C	The orientation of the magnetic field
D	The ratio of the velocity to the wavelength

12. - T3C11

Why do VHF and UHF radio signals usually travel somewhat farther than the visual line of sight distance between two stations?

Select	Answer
A	The Earth seems less curved to radio waves than to light
B	Radio waves are blocked by dust particles
C	Radio signals move somewhat faster than the speed of light
D	Radio waves are not blocked by dust particles

13. - T4A02

How might a computer be used as part of an amateur radio station?

Select	Answer
A	For generating and decoding digital signals
B	For sending and/or receiving CW
C	All of these choices are correct
D	For logging contacts and contact information

14. - T4B03

What is the purpose of the squelch control on a transceiver?

Select	Answer
A	To mute receiver output noise when no signal is being received
B	To set the highest level of volume desired
C	To adjust the automatic gain control
D	To set the transmitter power level

15. - T5A02

Electrical power is measured in which of the following units?

Select	Answer
A	Ohms
B	Volts
C	Amperes
D	Watts

16. - T5B01

How many milliamperes is 1.5 amperes?

Select	Answer
A	15,000 milliamperes
B	15 milliamperes
C	1,500 milliamperes
D	150 milliamperes

17. - T5C05

What is the unit of frequency?

Select	Answer
A	Hertz
B	Henry
C	Farad
D	Tesla

18. - T5D12

What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

Select	Answer
A	12 volts
B	20 volts
C	8 volts
D	0.2 volts

19. - T6A04

What electrical component stores energy in an electric field?

Select	Answer
A	Diode
B	Inductor
C	Resistor
D	Capacitor

20. - T6B09

What are the names of the two electrodes of a diode?

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

21. - T6C09

What is component 4 in figure T2?

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

22. - T6D07

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

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

23. - T7A04

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

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

24. - T7B12

What might be the first step to resolve cable TV interference from your ham radio transmission?

Select	Answer
A	Add a preamplifier to the TV antenna input
B	Add a high pass filter to the TV antenna input
C	Be sure all TV coaxial connectors are installed properly
D	Add a low pass filter to the TV antenna input

25. - T7C10

Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

Select	Answer
A	Ultraviolet and RF signals can mix together, causing interference
B	Ultraviolet resistant jackets prevent harmonic radiation
C	Ultraviolet light can increase losses in the cables jacket
D	Ultraviolet light can damage the jacket and allow water to enter the cable

26. - T7D05

What instrument is used to measure resistance?

Select	Answer
A	An ohmmeter
B	A noise bridge
C	An oscilloscope
D	A spectrum analyzer

27. - T8A04

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

Select	Answer
A	AM
B	PSK
C	FM
D	SSB

28. - T8B05

What is a satellite beacon?

Select	Answer
A	A transmission from a space station that contains information about a satellite
B	The primary transmit antenna on the satellite
C	An indicator light that that shows where to point your antenna
D	A reflective surface on the satellite

29. - T8C07

What is the maximum power allowed when transmitting telecommand signals to radio controlled models?

Select	Answer
A	1 watt
B	500 milliwatts
C	25 watts
D	1500 watts

30. - T8D03

Which of the following devices provides data to the transmitter when sending automatic position reports from a mobile amateur radio station?

Select	Answer
A	A WWV receiver
B	A connection to a broadcast FM sub-carrier receiver
C	The vehicle speedometer
D	A Global Positioning System receiver

31. - T9A09

What is the approximate length, in inches, of a 6 meter 1/2-wavelength wire dipole antenna?

Select	Answer
A	236
B	50
C	6
D	112

32. - T9B02

What is the impedance of the most commonly used coaxial cable in typical amateur radio installations?

Select	Answer
A	8 ohms
B	600 ohms
C	12 ohms
D	50 ohms

33. - T0A10

What can happen if a lead-acid storage battery is charged or discharged too quickly?

Select	Answer
A	The battery could overheat and give off flammable gas or explode
B	The memory effect will reduce the capacity of the battery
C	The voltage can become reversed
D	All of these choices are correct

34. - 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	All of these choices are correct
C	Wear a ground strap connected to your wrist at all times
D	Insulate the base of the tower to avoid lightning strikes

35. - T0C13

If the averaging time for exposure is 6 minutes, how much power density is permitted if the signal is present for 3 minutes and absent for 3 minutes rather than being present for the entire 6 minutes?

Select	Answer
A	There is no adjustment allowed for shorter exposure times
B	3 times as much
C	1/2 as much
D	2 times as much

Figure T2