Practice Exam

T7A02

1. What is a transceiver?

• A. A device that combines a receiver and transmitter
• B. A device for converting receiver and transmitter frequencies to another band
• C. A device for matching feed line impedance to 50 ohms
• D. A device for automatically sending and decoding Morse code

T7B02

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

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

T5A09

3. Which of the following describes alternating current?

• A. Current that alternates between a positive direction and zero
• B. Current that alternates between positive and negative directions
• C. Current that alternates between a negative direction and zero
• D. All these answers are correct

T1B02

4. Which amateurs may contact the International Space Station (ISS) on VHF bands?

• A. Any amateur holding a General class or higher license who has applied for and received approval from NASA
• B. Any amateur holding a Technician class or higher license
• C. Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
• D. Any amateur holding a General class or higher license

T6A09

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

• A. Thyratron
• B. Fuse
• C. Varactor
• D. All these choices are correct

T3B02

6. What property of a radio wave defines its polarization?

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

T7C05

7. Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?

• A. To protect the output amplifier transistors
• B. Because power supplies cannot supply enough current at high SWR
• C. To comply with FCC rules on spectral purity
• D. To lower the SWR on the transmission line

T5D11

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

• A. 1 volt
• B. 9 volts
• C. 10 volts
• D. 11 volts

T3C08

9. What causes tropospheric ducting?

• A. Discharges of lightning during electrical storms
• B. Updrafts from hurricanes and tornadoes
• C. Temperature inversions in the atmosphere
• D. Sunspots and solar flares

T2B01

10. How is a VHF/UHF transceiver's "reverse" function used?

• A. To listen on a repeater's output frequency
• B. To increase power output
• C. To reduce power output
• D. To listen on a repeater's input frequency

T0A02

11. What health hazard is presented by electrical current flowing through the body?

• A. All these choices are correct
• B. It may cause involuntary muscle contractions
• C. It may disrupt the electrical functions of cells
• D. It may cause injury by heating tissue

T3A02

12. What is the effect of vegetation on UHF and microwave signals?

• A. Polarization rotation
• B. Knife-edge diffraction
• C. Amplification
• D. Absorption

T2C03

13. What technique is used to ensure that voice messages containing unusual words are received correctly?

• A. Send the words by voice and Morse code
• B. Speak very loudly into the microphone
• C. All these choices are correct
• D. Spell the words using a standard phonetic alphabet

T1E04

14. What determines the transmitting frequency privileges of an amateur station?

• A. The highest class of operator license held by anyone on the premises
• B. The frequency authorized by the frequency coordinator
• C. The frequencies printed on the license grant
• D. The class of operator license held by the control operator

T6C12

15. Which of the following is accurately represented in electrical schematics?

• A. Component connections
• B. Physical appearance of components
• C. Wire lengths
• D. All these choices are correct

T0C01

16. What type of radiation are radio signals?

• A. Ionizing radiation
• B. Non-ionizing radiation
• C. Alpha radiation
• D. Gamma radiation

T1F01

17. When must the station and its records be available for FCC inspection?

• A. At any time ten days after notification by the FCC of such an inspection
• B. At any time after written notification by the FCC of such inspection
• C. Only when presented with a valid warrant by an FCC official or government agent
• D. At any time upon request by an FCC representative

T6B01

18. Which is true about forward voltage drop in a diode?

• A. It has no impact on the voltage delivered to the load
• B. It indicates that the diode is defective
• C. It is lower in some diode types than in others
• D. It is proportional to peak inverse voltage

T8A11

19. What is the approximate bandwidth required to transmit a CW signal?

• A. 2.4 kHz
• B. 1000 Hz
• C. 15 kHz
• D. 150 Hz

T1D10

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

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

T7D11

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

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

T8B09

22. What causes spin fading of satellite signals?

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

T8D04

23. What type of transmission is indicated by the term "NTSC?"

• A. An analog fast-scan color TV signal
• B. A special mode for satellite uplink
• C. A Normal Transmission mode in Static Circuit
• D. A frame compression scheme for TV signals

T1C10

24. How soon after passing the examination for your first amateur radio license may you transmit on the amateur radio bands?

• A. As soon as your operator/station license grant appears on the ARRL website
• B. Immediately on receiving your Certificate of Successful Completion of Examination (CSCE)
• C. As soon as you receive your license in the mail from the FCC
• D. As soon as your operator/station license grant appears in the FCC's license database

T5B11

25. Which decibel value represents a power increase from 20 watts to 200 watts?

• A. 10 dB
• B. 18 dB
• C. 28 dB
• D. 12 dB

T0B03

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

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

T6D01

27. Which of the following devices or circuits changes an alternating current into a varying direct current signal?

• A. Reflector
• B. Transformer
• C. Amplifier
• D. Rectifier

T8C01

28. Which of the following methods is used to locate sources of noise interference or jamming?

• A. Phase locking
• B. Doppler radar
• C. Radio direction finding
• D. Echolocation

T2A06

29. Which of the following is required when making on-the-air test transmissions?

• A. Conduct tests only between 10 p.m. and 6 a.m. local time
• B. All these choices are correct
• C. Identify the transmitting station
• D. Notify the FCC of the transmissions

T1A04

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

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

T4B06

31. Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

• A. The bandwidth selection
• B. The RIT or Clarifier
• C. The AGC or limiter
• D. The tone squelch

T9B01

32. What is a benefit of low SWR?

• A. Less antenna wear
• B. All these choices are correct
• C. Reduced signal loss
• D. Reduced television interference

T4A08

33. Which of the following conductors is preferred for bonding at RF?

• A. Flat copper strap
• B. Twisted-pair cable
• C. Copper braid removed from coaxial cable
• D. Steel wire

T5C09

34. How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

• A. 0.7 watts
• B. 138 watts
• C. 23.8 watts
• D. 3.8 watts

T9A10

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

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