Practice Exam

T9B05

1. What happens as the frequency of a signal in coaxial cable is increased?

• A. The characteristic impedance increases
• B. The characteristic impedance decreases
• C. The loss decreases
• D. The loss increases

T0B07

2. Which of the following is an important safety rule to remember when using a crank-up tower?

• A. This type of tower must never be painted
• B. All these choices are correct
• C. This type of tower must not be climbed unless it is retracted, or mechanical safety locking devices have been installed
• D. This type of tower must never be grounded

T1A05

3. What proves that the FCC has issued an operator/primary license grant?

• A. All these choices are correct
• B. The license appears in the FCC ULS database
• C. An email notification from the NCVEC granting the license
• D. A printed copy of the certificate of successful completion of examination

T5D10

4. What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?

• A. 1.5 volts
• B. 1 volt
• C. 0.25 volts
• D. 2.5 volts

T1D10

5. How does the FCC define broadcasting for the Amateur Radio Service?

• A. Transmission of messages directed only to amateur operators
• B. Any transmission made by the licensed station
• C. Two-way transmissions by amateur stations
• D. Transmissions intended for reception by the general public

T8D11

6. What is an ARQ transmission system?

• A. A method of compressing data using autonomous reiterative Q codes prior to final encoding
• B. A special transmission format limited to video signals
• C. An error correction method in which the receiving station detects errors and sends a request for retransmission
• D. A system used to encrypt command signals to an amateur radio satellite

T8B10

7. What is a LEO satellite?

• A. A satellite in low energy operation mode
• B. A highly elliptical orbit satellite
• C. A sun synchronous satellite
• D. A satellite in low earth orbit

T7D11

8. Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

• A. Ensure that the circuit is operating at the correct frequency
• B. Ensure that the circuit is grounded
• C. Ensure that the circuit is not powered
• D. Ensure that the applied voltages are correct

T1E06

9. When, under normal circumstances, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment?

• A. As part of a multi-operator contest team
• B. At no time
• C. When designated as the control operator by an Amateur Extra Class licensee
• D. When using a club station whose trustee holds an Amateur Extra Class license

T8A01

10. Which of the following is a form of amplitude modulation?

• A. Packet radio
• B. Single sideband
• C. Phase shift keying (PSK)
• D. Spread spectrum

T4B01

11. What is the effect of excessive microphone gain on SSB transmissions?

• A. Increased SWR
• B. Distorted transmitted audio
• C. Frequency instability
• D. All these choices are correct

T5B06

12. Which is equal to 3000 milliamperes?

• A. 0.003 amperes
• B. 3 amperes
• C. 0.3 amperes
• D. 3,000,000 amperes

T3A10

13. What effect does multi-path propagation have on data transmissions?

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

T5C08

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

• A. P = E + I
• B. P = E * I
• C. P = E / I
• D. P = E - I

T2B06

15. What type of signaling uses pairs of audio tones?

• A. DTMF
• B. CTCSS
• C. GPRS
• D. D-STAR

T0C10

16. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

• A. It affects the peak exposure to radiation
• B. It takes into account the thermal effects of the final amplifier
• C. It takes into account the antenna feed line loss
• D. It affects the average exposure to radiation

T1F06

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

• A. KL7CC slash W3
• B. All these choices are correct
• C. KL7CC slant W3
• D. KL7CC stroke W3

T2A09

18. Which of the following indicates that a station is listening on a repeater and looking for a contact?

• A. "QSY" followed by your call sign
• B. "CQ CQ" followed by the repeater's call sign
• C. The repeater call sign followed by the station's call sign
• D. The station's call sign followed by the word "monitoring"

T7C07

19. What happens to power lost in a feed line?

• A. It is radiated as harmonics
• B. It is converted into heat
• C. It distorts the signal
• D. It increases the SWR

T1B10

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

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

T5A12

21. What describes the number of times per second that an alternating current makes a complete cycle?

• A. Frequency
• B. Wavelength
• C. Pulse rate
• D. Speed

T4A06

22. What signals are used in a computer-radio interface for digital mode operation?

• A. Antenna and RF power
• B. Receive audio, transmit audio, and transmitter keying
• C. NMEA GPS location and DC power
• D. Receive and transmit mode, status, and location

T6A02

23. What type of component is often used as an adjustable volume control?

• A. Transformer
• B. Potentiometer
• C. Power resistor
• D. Fixed resistor

T6B11

24. What is the term that describes a device's ability to amplify a signal?

• A. Gain
• B. On resistance
• C. Forward resistance
• D. Forward voltage drop

T6C01

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

• A. Connector pinout
• B. Schematic
• C. Flow chart
• D. Bill of materials

T6D06

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

• A. Transistor
• B. Variable capacitor
• C. Diode
• D. Transformer

T0A03

27. In the United States, what circuit does black wire insulation indicate in a three-wire 120 V cable?

• A. Hot
• B. Neutral
• C. Equipment ground
• D. Black insulation is never used

T7A08

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

• A. Impedance matching
• B. Oscillation
• C. Low-pass filtering
• D. Modulation

T9A08

29. What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

• A. 19
• B. 50
• C. 112
• D. 12

T1C07

30. Which of the following can result in revocation of the station license or suspension of the operator license?

• A. Failure to inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
• B. Failure to provide and maintain a correct email address with the FCC
• C. Failure to obtain FCC type acceptance prior to using a home-built transmitter
• D. Failure to have a copy of your license available at your station

T3B06

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

• A. Wavelength in meters equals frequency in hertz multiplied by 300
• B. Wavelength in meters equals 300 divided by frequency in megahertz
• C. Wavelength in meters equals frequency in megahertz divided by 300
• D. Wavelength in meters equals frequency in hertz divided by 300

T8C08

32. What is the Internet Radio Linking Project (IRLP)?

• A. A technique for measuring signal strength of an amateur transmitter via the internet
• B. A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)
• C. A system for informing amateurs in real time of the frequency of active DX stations
• D. A system for providing access to websites via amateur radio

T7B06

33. Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception?

• A. All these choices are correct
• B. Immediately turn off your transmitter and contact the nearest FCC office for assistance
• C. Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
• D. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated

T3C11

34. Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

• A. The atmosphere refracts radio waves slightly
• B. Radio signals move somewhat faster than the speed of light
• C. Radio waves are not blocked by dust particles
• D. Radio waves are blocked by dust particles

T2C11

35. What is meant by "check" in a radiogram header?

• A. A list of stations that have relayed the message
• B. The call sign of the originating station
• C. A box on the message form that indicates that the message was received and/or relayed
• D. The number of words or word equivalents in the text portion of the message