Practice Exam

T5D06

1. What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

• A. 16 ohms
• B. 3 ohms
• C. 8 ohms
• D. 48 ohms

T5A01

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

• A. Watts
• B. Ohms
• C. Volts
• D. Amperes

T2C04

3. What is RACES?

• A. A radio contest held in a short period, sometimes called a "sprint"
• B. An emergency organization combining amateur radio and citizens band operators and frequencies
• C. An FCC part 97 amateur radio service for civil defense communications during national emergencies
• D. An international radio experimentation society

T8C06

4. How is over the air access to IRLP nodes accomplished?

• A. By obtaining a password that is sent via voice to the node
• B. By using CTCSS tone codes
• C. By entering the proper internet password
• D. By using DTMF signals

T9A07

5. What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?

• A. The SWR might decrease, decreasing the signal strength
• B. The bandwidth of the antenna will decrease, increasing SWR
• C. All these choices are correct
• D. Signal strength is reduced due to the shielding effect of the vehicle

T0C10

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

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

T2A03

7. What is a common repeater frequency offset in the 70 cm band?

• A. Plus or minus 1 MHz
• B. Plus or minus 5 MHz
• C. Plus or minus 500 kHz
• D. Plus or minus 600 kHz

T1F10

8. Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules?

• A. The control operator of the originating station
• B. Both the originating station and the repeater owner
• C. The control operator of the repeater
• D. The owner of the repeater

T4A01

9. Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

• A. 13.8 volts at 12 amperes
• B. 13.8 volts at 4 amperes
• C. 24.0 volts at 4 amperes
• D. 24.0 volts at 12 amperes

T7D01

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

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

T8D02

11. What is a "talkgroup" on a DMR repeater?

• A. A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
• B. A way for groups of users to share a channel at different times without hearing other users on the channel
• C. A net that meets at a specified time
• D. A group of operators sharing common interests

T6B02

12. What electronic component allows current to flow in only one direction?

• A. Fuse
• B. Resistor
• C. Driven element
• D. Diode

T3B03

13. What are the two components of a radio wave?

• A. Voltage and current
• B. Ionizing and non-ionizing radiation
• C. Electric and magnetic fields
• D. Impedance and reactance

T1E05

14. What is an amateur station's control point?

• A. The location of the station's transmitting apparatus
• B. The location of the station's transmitting antenna
• C. The location at which the control operator function is performed
• D. The mailing address of the station licensee

T1D05

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

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

T3A09

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

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

T3C08

17. What causes tropospheric ducting?

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

T0B08

18. Which is a proper grounding method for a tower?

• A. A ferrite-core RF choke connected between the tower and ground
• B. A connection between the tower base and a cold water pipe
• C. Separate eight-foot ground rods for each tower leg, bonded to the tower and each other
• D. A single four-foot ground rod, driven into the ground no more than 12 inches from the base

T7B01

19. What can you do if you are told your FM handheld or mobile transceiver is over-deviating?

• A. Let the transceiver cool off
• B. Talk farther away from the microphone
• C. Change to a higher power level
• D. Talk louder into the microphone

T0A03

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

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

T7A04

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

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

T1A05

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

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

T8A04

23. Which type of modulation is commonly used for VHF and UHF voice repeaters?

• A. SSB
• B. PSK
• C. AM
• D. FM or PM

T1C11

24. If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

• A. Yes, for up to two years
• B. Yes, for up to one year
• C. Yes, as soon as you apply for renewal
• D. No, you must wait until the license has been renewed

T2B04

25. Which of the following could be the reason you are unable to access a repeater whose output you can hear?

• A. You are using the wrong CTCSS tone
• B. Improper transceiver offset
• C. All these choices are correct
• D. You are using the wrong DCS code

T7C07

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

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

T9B09

27. What can cause erratic changes in SWR?

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

T6C05

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

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

T5B11

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

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

T6A05

30. What type of electrical component consists of conductive surfaces separated by an insulator?

• A. Potentiometer
• B. Resistor
• C. Oscillator
• D. Capacitor

T5C03

31. What describes the ability to store energy in a magnetic field?

• A. Admittance
• B. Inductance
• C. Resistance
• D. Capacitance

T4B01

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

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

T6D04

33. Which of the following displays an electrical quantity as a numeric value?

• A. Potentiometer
• B. Meter
• C. Relay
• D. Transistor

T8B09

34. What causes spin fading of satellite signals?

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

T1B10

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

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