Practice Exam

E9H01

1. What is the effective radiated power relative to a dipole of a repeater station with 150 watts transmitter power output, 2-dB feed line loss, 2.2-dB duplexer loss and 7-dBd antenna gain?

• A. 420 watts
• B. 286 watts
• C. 1977 watts
• D. 78.7 watts

E0A10

2. What material found in some electronic components such as high-voltage capacitors and transformers is considered toxic?

• A. Polytetrafluroethylene
• B. Polyethylene
• C. Polychlorinated biphenyls
• D. Polymorphic silicon

E4B06

3. How much power is being absorbed by the load when a directional power meter connected between a transmitter and a terminating load reads 100 watts forward power and 25 watts reflected power?

• A. 125 watts
• B. 75 watts
• C. 100 watts
• D. 25 watts

E5A07

4. What is the magnitude of the current at the input of a parallel RLC circuit at resonance?

• A. Minimum
• B. R/L
• C. Maximum
• D. L/R

E1D03

5. What is a telecommand station in the amateur satellite service?

• A. An amateur station that transmits communications to initiate, modify or terminate functions of a space station
• B. An amateur station located more than 50 km above the Earth's surface
• C. An amateur station located on the Earth's surface for communications with other Earth stations by means of Earth satellites
• D. An amateur station that transmits telemetry consisting of measurements of upper atmosphere data from space

E2B07

6. What is the name of the signal component that carries color information in NTSC video?

• A. Spectral Intensity
• B. Chroma
• C. Hue
• D. Luminance

E7B21

7. Which of the following devices is generally best suited for UHF or microwave power amplifier applications?

• A. Field effect transistor
• B. Triac
• C. Nuvistor
• D. Silicon controlled rectifier

E8D12

8. What is the peak voltage of a sinusoidal waveform if an RMS-reading voltmeter reads 34 volts?

• A. 96 volts
• B. 123 volts
• C. 55 volts
• D. 48 volts

E8A01

9. What type of wave is made up of a sine wave plus all of its odd harmonics?

• A. A square wave
• B. A tangent wave
• C. A sine wave
• D. A cosine wave

E2D03

10. Which of the following digital modes is especially useful for EME communications?

• A. PACTOR III
• B. JT65
• C. Olivia
• D. FSK441

E8B04

11. What is the modulation index of an FM-phone signal having a maximum carrier deviation of plus or minus 6 kHz when modulated with a 2-kHz modulating frequency?

• A. 2000
• B. 3
• C. 1/3
• D. 6000

E6F09

12. What is the efficiency of a photovoltaic cell?

• A. The effective payback period
• B. The open-circuit voltage divided by the short-circuit current under full illumination
• C. The relative fraction of light that is converted to current
• D. The output RF power divided by the input dc power

E9G05

13. What type of chart is shown in Figure E9-3?

• A. Elevation angle radiation pattern chart
• B. Smith chart
• C. Free-space radiation directivity chart
• D. Azimuth angle radiation pattern chart

E1A02

14. When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the lowest frequency at which a properly adjusted LSB emission will be totally within the band?

• A. 300 Hz above the lower band edge
• B. 1 kHz above the lower band edge
• C. 3 kHz above the lower band edge
• D. The exact lower band edge

E9E03

15. What is the name of the matching system that uses a section of transmission line connected in parallel with the feed line at the feed point?

• A. The stub match
• B. The omega match
• C. The delta match
• D. The gamma match

E4C07

16. What does the MDS of a receiver represent?

• A. The multiplex distortion stability
• B. The minimum discernible signal
• C. The meter display sensitivity
• D. The maximum detectable spectrum

E3C02

17. What is the cause of Aurora activity?

• A. A low sunspot level combined with tropospheric ducting
• B. The interaction between the solar wind and the Van Allen belt
• C. The interaction of charged particles from the Sun with the Earth's magnetic field and the ionosphere
• D. Meteor showers concentrated in the northern latitudes

E3A02

18. What characterizes libration fading of an Earth-Moon-Earth signal?

• A. The returning echo is several Hertz lower in frequency than the transmitted signal
• B. A slow change in the pitch of the CW signal
• C. A fluttery irregular fading
• D. A gradual loss of signal as the Sun rises

E1E10

19. What must the administering VEs do after the administration of a successful examination for an amateur operator license?

• A. They must collect and send the documents to the NCVEC for grading
• B. They must collect and send the documents to the FCC according to instructions
• C. They must collect and submit the documents to the coordinating VEC for grading
• D. They must submit the application document to the coordinating VEC according to the coordinating VEC instructions

E9C07

20. What type of antenna pattern over real ground is shown in Figure E9-2?

• A. Elevation
• B. Radiation resistance
• C. Azimuth
• D. Polarization

E7F06

21. What is one purpose of a marker generator?

• A. To add audio markers to an oscilloscope
• B. To provide a means of calibrating a receiver's frequency settings
• C. To provide a frequency reference for a phase locked loop
• D. To add time signals to a transmitted signal

E1B09

22. Which amateur stations may be operated in RACES?

• A. Any FCC-licensed amateur station except a Technician class operator's station
• B. Any FCC-licensed amateur station participating in the Military Affiliate Radio System (MARS)
• C. Only those club stations licensed to Amateur Extra class operators
• D. Any FCC-licensed amateur station certified by the responsible civil defense organization for the area served

E7H06

23. Which of the following oscillator circuits are commonly used in VFOs?

• A. Armstrong and deForest
• B. Negative feedback and balanced feedback
• C. Pierce and Zener
• D. Colpitts and Hartley

E6C13

24. Which of the following is an advantage of BiCMOS logic?

• A. It has the high input impedance of CMOS and the low output impedance of bipolar transistors
• B. Its simplicity results in much less expensive devices than standard CMOS
• C. All of these choices are correct
• D. It is totally immune to electrostatic damage

E8C06

25. What is the necessary bandwidth of a 170-hertz shift, 300-baud ASCII transmission?

• A. 1.0 kHz
• B. 0.1 Hz
• C. 0.5 kHz
• D. 0.3 kHz

E5C20

26. Which point in Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and an 18 microhenry inductor at 3.505 MHz?

• A. Point 3
• B. Point 1
• C. Point 7
• D. Point 8

E7E13

27. Which of the following describes a common means of generating an SSB signal when using digital signal processing?

• A. Emulation of quartz crystal filter characteristics
• B. Mixing products are converted to voltages and subtracted by adder circuits
• C. The quadrature method
• D. A frequency synthesizer removes the unwanted sidebands

E6D14

28. Which is NOT true of a charge-coupled device (CCD)?

• A. It uses a combination of analog and digital circuitry
• B. It samples and stores analog signals
• C. It can be used to make an audio delay line
• D. It is commonly used as an analog-to-digital converter

E9D06

29. Why should an HF mobile antenna loading coil have a high ratio of reactance to resistance?

• A. To minimize losses
• B. To maximize losses
• C. To minimize the Q
• D. To swamp out harmonics

E1F04

30. Which of the following geographic descriptions approximately describes "Line A"?

• A. A line roughly parallel to and east of the US Pacific coastline
• B. A line roughly parallel to and south of the US-Canadian border
• C. A line roughly parallel to and north of the US-Mexican border and Gulf coastline
• D. A line roughly parallel to and west of the US Atlantic coastline

E3B03

31. What is the best time of day for transequatorial propagation?

• A. Late at night
• B. Morning
• C. Afternoon or early evening
• D. Noon

E6E03

32. What is one aspect of the piezoelectric effect?

• A. Reversed conduction states when a P-N junction is exposed to light
• B. Mechanical deformation of a crystal by the application of a magnetic field
• C. Physical deformation of a crystal by the application of a voltage
• D. The generation of electrical energy by the application of light

E5D15

33. What is the power factor of an RL circuit having a 45 degree phase angle between the voltage and the current?

• A. 1.0
• B. 0.866
• C. 0.707
• D. 0.5

E6A05

34. What is the alpha of a bipolar junction transistor?

• A. The change of base current with respect to collector current
• B. The change of collector current with respect to base current
• C. The change of collector current with respect to emitter current
• D. The change of collector current with respect to gate current

E2A08

35. Why should effective radiated power to a satellite which uses a linear transponder be limited?

• A. To prevent the satellite from emitting out of band signals
• B. To avoid reducing the downlink power to all other users
• C. To avoid interfering with terrestrial QSOs
• D. To prevent creating errors in the satellite telemetry

E5B01

36. What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the applied voltage?

• A. One time constant
• B. One exponential period
• C. An exponential rate of one
• D. A time factor of one

E7D04

37. Which of the following types of linear voltage regulator usually make the most efficient use of the primary power source?

• A. A shunt current source
• B. A series regulator
• C. A shunt regulator
• D. A series current source

E9A08

38. What is meant by antenna gain?

• A. The final amplifier gain minus the transmission-line losses, including any phasing lines present
• B. The ratio of the signal in the forward direction to that in the opposite direction
• C. The ratio relating the radiated signal strength of an antenna in the direction of maximum radiation to that of a reference antenna
• D. The ratio of the amount of power radiated by an antenna compared to the transmitter output power

E9F07

39. How does ladder line compare to small-diameter coaxial cable such as RG-58 at 50 MHz?

• A. Lower velocity factor
• B. Higher SWR
• C. Lower loss
• D. Smaller reflection coefficient

E6B13

40. What type of bias is required for an LED to emit light?

• A. Reverse bias
• B. Zero bias
• C. Inductive bias
• D. Forward bias

E7C14

41. Which of these modes is most affected by non-linear phase response in a receiver IF filter?

• A. Digital
• B. Meteor Scatter
• C. Single-Sideband voice
• D. Video

E9B09

42. What type of computer program technique is commonly used for modeling antennas?

• A. Graphical analysis
• B. Mutual impedance analysis
• C. Method of Moments
• D. Calculus differentiation with respect to physical properties

E4E13

43. What might be the cause of a loud roaring or buzzing AC line interference that comes and goes at intervals?

• A. A malfunctioning illuminated advertising display
• B. All of these choices are correct
• C. Arcing contacts in a thermostatically controlled device
• D. A defective doorbell or doorbell transformer inside a nearby residence

E4A11

44. Which of these instruments could be used for detailed analysis of digital signals?

• A. Oscilloscope
• B. Ohmmeter
• C. Q meter
• D. Dip meter

E2E12

45. Which type of digital communication does not support keyboard-to-keyboard operation?

• A. PSK31
• B. Winlink
• C. MFSK
• D. RTTY

E7G10

46. What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 1800 ohms and RF is 68 kilohms?

• A. 76
• B. 38
• C. 0.03
• D. 1

E7A01

47. Which of the following is a bistable circuit?

• A. A flip-flop
• B. An "AND" gate
• C. An "OR" gate
• D. A clock

E1C10

48. What types of amateur stations may automatically retransmit the radio signals of other amateur stations?

• A. Only auxiliary, beacon or space stations
• B. Only earth stations, repeater stations or model craft
• C. Only beacon, repeater or space stations
• D. Only auxiliary, repeater or space stations

E4D12

49. What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?

• A. Quieting
• B. Desensitization
• C. Squelch gain rollback
• D. Cross-modulation interference

E2C05

50. What is the function of a DX QSL Manager?

• A. To relay calls to and from a DX station
• B. To run a net to allow many stations to contact a rare DX station
• C. To allocate frequencies for DXpeditions
• D. To handle the receiving and sending of confirmation cards for a DX station