Practice Exam

T5D09

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

• A. 10 amperes
• B. 0.1 amperes
• C. 24,000 amperes
• D. 216 amperes

T5A02

2. Electrical power is measured in which of the following units?

• A. Watts
• B. Watt-hours
• C. Amperes
• D. Volts

T2C08

3. Which of the following is a characteristic of good traffic handling?

• A. All these choices are correct
• B. Making decisions as to whether messages are worthy of relay or delivery
• C. Passing messages exactly as received
• D. Ensuring that any newsworthy messages are relayed to the news media

T2A07

4. What is meant by "repeater offset"?

• A. The difference between a repeater's transmit and receive frequencies
• B. The repeater has a time delay to prevent interference
• C. The repeater station identification is done on a separate frequency
• D. The number of simultaneous transmit frequencies used by a repeater

T1A08

5. Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?

• A. International Telecommunication Union
• B. Frequency Spectrum Manager appointed by the FCC
• C. Volunteer Frequency Coordinator recognized by local amateurs
• D. FCC Regional Field Office

T5C11

6. How much current is required to deliver 120 watts at a voltage of 12 volts DC?

• A. 0.1 amperes
• B. 132 amperes
• C. 10 amperes
• D. 12 amperes

T5B10

7. Which decibel value most closely represents a power decrease from 12 watts to 3 watts?

• A. -3 dB
• B. -6 dB
• C. -1 dB
• D. -9 dB

T7B04

8. Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

• A. Band-pass filter
• B. Ferrite choke
• C. Low-pass filter
• D. Preamplifier

T2B11

9. Which Q signal indicates that you are changing frequency?

• A. QSL
• B. QSY
• C. QRU
• D. QRZ

T9B09

10. What can cause erratic changes in SWR?

• A. Overload from a strong local station
• B. Over-modulation
• C. Loose connection in the antenna or feed line
• D. Local thunderstorm

T1E01

11. When may an amateur station transmit without a control operator?

• A. When the station licensee is away and another licensed amateur is using the station
• B. Never
• C. When using automatic control, such as in the case of a repeater
• D. When the transmitting station is an auxiliary station

T8D05

12. Which of the following is an application of APRS?

• A. Providing information on the number of stations signed into a repeater
• B. Providing voice over internet connection between repeaters
• C. Showing automatically the number of packets transmitted via PACTOR during a specific time interval
• D. Providing real-time tactical digital communications in conjunction with a map showing the locations of stations

T1B04

13. Which amateur band includes 146.52 MHz?

• A. 20 meters
• B. 2 meters
• C. 6 meters
• D. 70 centimeters

T3A08

14. What is a likely cause of irregular fading of signals propagated by the ionosphere?

• A. Frequency shift due to Faraday rotation
• B. Interference from thunderstorms
• C. Random combining of signals arriving via different paths
• D. Intermodulation distortion

T8B09

15. What causes spin fading of satellite signals?

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

T8C04

16. Which of the following is good procedure when contacting another station in a contest?

• A. All these choices are correct
• B. Contact the station twice to be sure that you are in his log
• C. Sign only the last two letters of your call if there are many other stations calling
• D. Send only the minimum information needed for proper identification and the contest exchange

T9A10

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

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

T6A11

18. Which of the following battery chemistries is not rechargeable?

• A. Nickel-cadmium
• B. Carbon-zinc
• C. Lithium-ion
• D. Lead-acid

T0B02

19. What is required when climbing an antenna tower?

• A. Always wear an approved climbing harness
• B. All these choices are correct
• C. Use appropriate tie-off to the tower at all times
• D. Have sufficient training on safe tower climbing techniques

T0A07

20. Where should a lightning arrester be installed in a coaxial feed line?

• A. At the antenna feed point
• B. At the output connector of a transceiver
• C. At the ac power service panel
• D. On a grounded panel near where feed lines enter the building

T6C10

21. What is component 3 in figure T-3?

• A. Connector
• B. Variable capacitor
• C. Meter
• D. Variable inductor

T4A09

22. How can you determine the length of time that equipment can be powered from a battery?

• A. Divide the battery ampere-hour rating by the average current draw of the equipment
• B. Multiply the square of the current rating of the battery by the input resistance of the equipment
• C. Multiply the watts per hour consumed by the equipment by the battery power rating
• D. Divide the watt-hour rating of the battery by the peak power consumption of the equipment

T3B05

23. What is the relationship between wavelength and frequency?

• A. Wavelength and frequency are unrelated
• B. Wavelength gets longer as frequency increases
• C. Wavelength and frequency increase as path length increases
• D. Wavelength gets shorter as frequency increases

T4B08

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

• A. Permits monitoring several modes at once by selecting a separate filter for each mode
• B. Increases the amount of offset between receive and transmit frequencies
• 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

T7D02

25. How is a voltmeter connected to a component to measure applied voltage?

• A. In series
• B. In parallel
• C. In quadrature
• D. In phase

T6B11

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

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

T3C08

27. What causes tropospheric ducting?

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

T1D10

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

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

T7C10

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

• A. Ultraviolet and RF signals can mix, causing interference
• B. Ultraviolet light can increase losses in the cable's jacket
• C. Ultraviolet resistant jackets prevent harmonic radiation
• D. Ultraviolet light can damage the jacket and allow water to enter the cable

T0C11

30. What is the definition of duty cycle during the averaging time for RF exposure?

• A. The percentage of time that a transmitter is not transmitting
• B. The difference between the PEP and average power output of a transmitter
• C. The percentage of time that a transmitter is transmitting
• D. The difference between the lowest power output and the highest power output of a transmitter

T1C05

31. Which of the following is a valid Technician class call sign format?

• A. KA1X
• B. W1XX
• C. KF1XXX
• D. All these choices are correct

T6D06

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

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

T8A12

33. Which of the following is a disadvantage of FM compared with single sideband?

• A. Only one signal can be received at a time
• B. FM signals are harder to tune
• C. Voice quality is poorer
• D. All these choices are correct

T1F03

34. When are you required to transmit your assigned call sign?

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

T7A04

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

• A. Discrimination ratio
• B. Harmonic distortion
• C. Selectivity
• D. Sensitivity