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. - T1A06

Which of the following services are protected from interference by amateur signals under all circumstances?

Select	Answer
A	Land Mobile Radio Service
B	Broadcast Service
C	Radionavigation Service
D	Citizens Radio Service

2. - T1B08

Which of the following is a result of the fact that the amateur service is secondary in some portions of the 70 cm band?

Select	Answer
A	Digital transmissions are not permitted on 70 cm
B	U.S. amateurs may find non-amateur stations in the bands, and must avoid interfering with them
C	International communications are not permitted on 70 cm
D	U.S. amateurs must give foreign amateur stations priority in those portions

3. - T1C06

From which of the following locations may an FCC-licensed amateur station transmit, in addition to places where the FCC regulates communications?

Select	Answer
A	From any vessel or craft located in international waters and documented or registered in the United States
B	From anywhere within in ITU Regions 2 and 3
C	From within any country that is a member of the United Nations
D	From within any country that belongs to the International Telecommunications Union

4. - T1D05

When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade?

Select	Answer
A	When the equipment is normally used in an amateur station and such activity is not conducted on a regular basis
B	When the asking price is less than its appraised value
C	When the asking price is $100.00 or less
D	When the equipment is not the personal property of either the station licensee or the control operator or their close relatives

5. - T1E10

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

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

6. - T1F03

When is an amateur station required to transmit its assigned call sign?

Select	Answer
A	At least every 15 minutes during and at the end of a communication
B	At least once during each transmission
C	At the beginning of each contact, and every 10 minutes thereafter
D	At least every 10 minutes during and at the end of a communication

7. - T2A04

What is an appropriate way to call another station on a repeater if you know the other station's call sign?

Select	Answer
A	Say the station's call sign then identify with your call sign
B	Say CQ three times then the other station's call sign
C	Wait for the station to call CQ then answer it
D	Say break, break then say the station's call sign

8. - T2B07

What could cause your FM signal to interfere with stations on nearby frequencies?

Select	Answer
A	Microphone gain too high, causing over-deviation
B	Incorrect CTCSS Tone
C	All of these choices are correct
D	SWR too high

9. - T2C08

Which of the following is a characteristic of good emergency traffic handling?

Select	Answer
A	Communicating messages to the news media for broadcast outside the disaster area
B	Making decisions as to whether or not messages should be relayed or delivered
C	Passing messages exactly as received
D	All of these choices are correct

10. - T3A10

What may occur if data signals propagate over multiple paths?

Select	Answer
A	No significant changes will occur if the signals are transmitting using FM
B	Transmission rates can be increased by a factor equal to the number of separate paths observed
C	Transmission rates must be decreased by a factor equal to the number of separate paths observed
D	Error rates are likely to increase

11. - T3B10

What frequency range is referred to as HF?

Select	Answer
A	3 to 30 MHz
B	30 to 300 MHz
C	300 to 3000 kHz
D	300 to 3000 MHz

12. - T3C06

What mode is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?

Select	Answer
A	D layer refraction
B	Faraday rotation
C	F2 layer refraction
D	Tropospheric scatter

13. - T4A12

What could be happening if another operator reports a variable high-pitched whine on the audio from your mobile transmitter?

Select	Answer
A	You have the volume on your receiver set too high
B	Your microphone is picking up noise from an open window
C	You need to adjust your squelch control
D	Noise on the vehicles electrical system is being transmitted along with your speech audio

14. - T4B11

Which of the following describes the common meaning of the term "repeater offset"?

Select	Answer
A	The difference between the repeaters transmit and receive frequencies
B	The distance between the repeaters transmit and receive antennas
C	Matching the antenna impedance to the feed line impedance
D	The time delay before the repeater timer resets

15. - T5A01

Electrical current is measured in which of the following units?

Select	Answer
A	Ohms
B	Watts
C	Amperes
D	Volts

16. - T5B02

What is another way to specify a radio signal frequency of 1,500,000 hertz?

Select	Answer
A	150 kHz
B	1500 kHz
C	15 GHz
D	1500 MHz

17. - T5C13

What are the units of impedance?

Select	Answer
A	Coulombs
B	Ohms
C	Volts
D	Amperes

18. - T5D09

What is the current flowing through a 24-ohm resistor connected across 240 volts?

Select	Answer
A	216 amperes
B	0.1 amperes
C	10 amperes
D	24,000 amperes

19. - T6A11

Which of the following battery types is not rechargeable?

Select	Answer
A	Carbon-zinc
B	Lithium-ion
C	Nickel-cadmium
D	Lead-acid

20. - T6B07

What does the abbreviation LED stand for?

Select	Answer
A	Liquid Emission Detector
B	Long Echo Delay
C	Low Emission Diode
D	Light Emitting Diode

21. - T6C10

What is component 3 in figure T3?

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

22. - T6D07

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

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

23. - T7A08

Which of the following describes combining speech with an RF carrier signal?-

Select	Answer
A	Modulation
B	Low-pass filtering
C	Impedance matching
D	Oscillation

24. - T7B05

How can overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

Select	Answer
A	Switch the transmitter from FM to SSB
B	Switch the transmitter to a narrow-band mode
C	Block the amateur signal with a filter at the antenna input of the affected receiver
D	Block the interfering signal with a filter on the amateur transmitter

25. - T7C09

Which of the following is the most common cause for failure of coaxial cables?

Select	Answer
A	Overloading
B	Gamma rays
C	The velocity factor exceeds 1.0
D	Moisture contamination

26. - T7D10

What is probably happening when an ohmmeter, connected across an unpowered circuit, initially indicates a low resistance and then shows increasing resistance with time?

Select	Answer
A	The circuit contains a large capacitor
B	The ohmmeter is defective
C	The circuit is a relaxation oscillator
D	The circuit contains a large inductor

27. - T8A10

What is the typical bandwidth of analog fast-scan TV transmissions on the 70 cm band?

Select	Answer
A	About 3 MHz
B	About 6 MHz
C	About 1 MHz
D	More than 10 MHz

28. - T8B09

What causes spin fading when referring to satellite signals?

Select	Answer
A	Interfering signals within the satellite uplink band
B	Circular polarized noise interference radiated from the sun
C	Doppler shift of the received signal
D	Rotation of the satellite and its antennas

29. - T8C03

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

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

30. - T8D01

Which of the following is an example of a digital communications method?

Select	Answer
A	Packet
B	PSK31
C	MFSK
D	All of these choices are correct

31. - T9A02

Which of the following is true regarding vertical antennas?

Select	Answer
A	The magnetic field is perpendicular to the Earth
B	The phase is reversed
C	The electric field is perpendicular to the Earth
D	The phase is inverted

32. - T9B08

Why should coax connectors exposed to the weather be sealed against water intrusion?

Select	Answer
A	All of these choices are correct
B	To prevent an increase in feed line loss
C	To keep the jacket from becoming loose
D	To prevent interference to telephones

33. - T0A03

What is connected to the green wire in a three-wire electrical AC plug?

Select	Answer
A	Neutral
B	Safety ground
C	The white wire
D	Hot

34. - T0B09

Why should you avoid attaching an antenna to a utility pole?

Select	Answer
A	The antenna could contact high-voltage power wires
B	All of these choices are correct
C	The utility company will charge you an extra monthly fee
D	The antenna will not work properly because of induced voltages

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

Figure T3