Practice Exam

T6C05

1. What is component 4 in figure T-1?

• A. Ground symbol
• B. Transistor
• C. Battery
• D. Resistor

T7A04

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

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

T3B01

3. What is the relationship between the electric and magnetic fields of an electromagnetic wave?

• A. They revolve in opposite directions
• B. They are at right angles
• C. They travel at different speeds
• D. They are in parallel

T0B09

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

• A. The antenna could contact high-voltage power lines
• B. The antenna will not work properly because of induced voltages
• C. All these choices are correct
• D. The 60 Hz radiations from the feed line may increase the SWR

T1D05

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

• A. When no profit is made on the sale
• B. When selling amateur radio equipment and not on a regular basis
• C. When the equipment is not the personal property of either the station licensee, or the control operator, or their close relatives
• D. Never

T1A01

6. Which of the following is part of the Basis and Purpose of the Amateur Radio Service?

• A. Providing communications for international non-profit organizations
• B. All these choices are correct
• C. Providing personal radio communications for as many citizens as possible
• D. Advancing skills in the technical and communication phases of the radio art

T9A10

7. 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. Broadside to the antenna
• D. In the direction of the feed line

T5A09

8. Which of the following describes alternating current?

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

T0C03

9. How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

• A. It increases by a factor of 2
• B. It increases by a factor of 3
• C. It decreases by 50 percent
• D. There is no adjustment allowed for lower duty cycle

T1E01

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

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

T7C11

11. What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?

• A. It requires special techniques to prevent moisture in the cable
• B. It cannot be used for VHF or UHF antennas
• C. It has more loss per foot
• D. It cannot be used at below freezing temperatures

T7B02

12. 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 audio amplifier of the transmitter is overloaded
• C. The deviation of an FM transmitter is set too low
• D. The receiver is unable to reject strong signals outside the AM or FM band

T4B06

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

T9B09

14. What can cause erratic changes in SWR?

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

T0A11

15. What hazard exists in a power supply immediately after turning it off?

• A. Circulating currents in the dc filter
• B. Charge stored in filter capacitors
• C. Leakage flux in the power transformer
• D. Voltage transients from kickback diodes

T5B03

16. Which is equal to one kilovolt?

• A. One million volts
• B. One one-thousandth of a volt
• C. One hundred volts
• D. One thousand volts

T5C08

17. 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

T4A12

18. What is an electronic keyer?

• A. An interlock to prevent unauthorized use of a radio
• B. A device for switching antennas from transmit to receive
• C. A device for voice activated switching from receive to transmit
• D. A device that assists in manual sending of Morse code

T2A10

19. What is a band plan, beyond the privileges established by the FCC?

• A. A voluntary guideline for using different modes or activities within an amateur band
• B. A plan devised by a club to indicate frequency band usage
• C. A list of operating schedules
• D. A list of available net frequencies

T8A01

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

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

T1C01

21. For which license classes are new licenses currently available from the FCC?

• A. Technician, General, Amateur Extra
• B. Technician, Technician Plus, General, Amateur Extra
• C. Novice, Technician Plus, General, Advanced
• D. Novice, Technician, General, Amateur Extra

T8B04

22. What mode of transmission is commonly used by amateur radio satellites?

• A. FM
• B. CW/data
• C. SSB
• D. All these choices are correct

T7D01

23. Which instrument would you use to measure electric potential?

• A. An ammeter
• B. A voltmeter
• C. An ohmmeter
• D. A wavemeter

T3A09

24. Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

• A. Both the transmitting and receiving antennas must be of the same polarization
• B. Digital modes are unusable
• C. Either vertically or horizontally polarized antennas may be used for transmission or reception
• D. FM voice is unusable

T6A10

25. Which of the following battery chemistries is rechargeable?

• A. Nickel-metal hydride
• B. Lithium-ion
• C. Lead-acid
• D. All these choices are correct

T3C11

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

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

T6B11

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

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

T1B03

28. Which frequency is in the 6 meter amateur band?

• A. 222.15 MHz
• B. 49.00 MHz
• C. 28.50 MHz
• D. 52.525 MHz

T1F04

29. What language may you use for identification when operating in a phone sub-band?

• A. Any language recognized by the ITU
• B. English, French, or Spanish
• C. English
• D. Any language recognized by the United Nations

T2C09

30. Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?

• A. Yes, but only in situations involving the immediate safety of human life or protection of property
• B. Yes, but only when part of a FEMA emergency plan
• C. Yes, but only when part of a RACES emergency plan
• D. No

T5D09

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

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

T8D06

32. What does the abbreviation "PSK" mean?

• A. Pulse Shift Keying
• B. Phase Shift Keying
• C. Phased Slide Keying
• D. Packet Short Keying

T6D01

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

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

T2B02

34. What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver?

• A. CTCSS
• B. DTMF
• C. Tone burst
• D. Carrier squelch

T8C09

35. Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

• A. EchoLink
• B. D-STAR
• C. IRLP
• D. DMR