Practice Exam

E1B09

1. Which amateur stations may be operated under RACES rules?

• A. Only stations meeting the FCC Part 97 technical standards for operation during an emergency
• B. Any FCC-licensed amateur station certified by the responsible civil defense organization for the area served
• C. Only those club stations licensed to Amateur Extra class operators
• D. Any FCC-licensed amateur station except a Technician class

E7C04

2. How does an impedance-matching circuit transform a complex impedance to a resistive impedance?

• A. It introduces transconductance to cancel the reactive part of impedance
• B. It cancels the reactive part of the impedance and changes the resistive part to the desired value
• C. Reactive currents are dissipated in matched resistances
• D. It introduces negative resistance to cancel the resistive part of impedance

E7E09

3. What occurs when the input signal levels to a mixer are too high?

• A. Automatic limiting occurs
• B. Spurious mixer products are generated
• C. Mixer blanking occurs
• D. Excessive AGC voltage levels are generated

E1A07

4. What is the maximum power permitted on the 2200-meter band?

• A. 1 watt EIRP (equivalent isotropic radiated power)
• B. 50 watts PEP (peak envelope power)
• C. 100 watts PEP (peak envelope power)
• D. 5 watts EIRP (equivalent isotropic radiated power)

E9B05

5. What type of antenna pattern is shown in Figure E9-2?

• A. Elevation
• B. Polarization
• C. Azimuth
• D. Near field

E7D03

6. What device is used as a stable voltage reference?

• A. A Zener diode
• B. An SCR
• C. A digital-to-analog converter
• D. An analog-to-digital converter

E4B04

7. Which S parameter represents input port return loss or reflection coefficient (equivalent to VSWR)?

• A. S22
• B. S11
• C. S12
• D. S21

E4E11

8. What could be the cause of local AM broadcast band signals combining to generate spurious signals on the MF or HF bands?

• A. Your station receiver IF amplifier stage is overloaded
• B. Nearby corroded metal connections are mixing and reradiating the broadcast signals
• C. You are receiving skywave signals from a distant station
• D. One or more of the broadcast stations is transmitting an over-modulated signal

E7G07

9. What voltage gain can be expected from the circuit in Figure E7-3 when R1 is 10 ohms and RF is 470 ohms?

• A. 0.21
• B. 4700
• C. 47
• D. 24

E2A10

10. What type of satellite appears to stay in one position in the sky?

• A. LEO
• B. HEO
• C. Geomagnetic
• D. Geostationary

E6A08

11. What is the term for the frequency at which the grounded-base current gain of a bipolar junction transistor has decreased to 0.7 of the gain obtainable at 1 kHz?

• A. Alpha cutoff frequency
• B. Beta cutoff frequency
• C. Alpha rejection frequency
• D. Corner frequency

E1D04

12. Which of the following is required in the identification transmissions from a balloon-borne telemetry station?

• A. The station's six-character Maidenhead grid locator
• B. All these choices are correct
• C. The output power of the balloon transmitter
• D. Call sign

E3B04

13. What are "extraordinary" and "ordinary" waves?

• A. Independently propagating, elliptically polarized waves created in the ionosphere
• B. Extraordinary waves exhibit rare long-skip propagation, compared to ordinary waves, which travel shorter distances
• C. Refracted rays and reflected waves
• D. Long-path and short-path waves

E1C09

14. What is the highest modulation index permitted at the highest modulation frequency for angle modulation below 29.0 MHz?

• A. 0.5
• B. 2.0
• C. 1.0
• D. 3.0

E9F08

15. Which of the following is a significant difference between foam dielectric coaxial cable and solid dielectric coaxial cable, assuming all other parameters are the same?

• A. All these choices are correct
• B. Foam dielectric coaxial cable has lower safe maximum operating voltage
• C. Foam dielectric coaxial cable has lower loss per unit of length
• D. Foam dielectric coaxial cable has higher velocity factor

E7B02

16. What is a Class D amplifier?

• A. An amplifier that uses switching technology to achieve high efficiency
• B. An amplifier biased to be relatively free from distortion
• C. A low power amplifier that uses a differential amplifier for improved linearity
• D. An amplifier that uses drift-mode FETs for high efficiency

E5B12

17. What is admittance?

• A. The term for the on-impedance of a field effect transistor
• B. The inverse of impedance
• C. The inverse of reactance
• D. The term for the gain of a field effect transistor

E2E01

18. Which of the following types of modulation is used for data emissions below 30 MHz?

• A. Spread spectrum
• B. Pulse modulation
• C. FSK
• D. DTMF tones modulating an FM signal

E2B08

19. What technique allows commercial analog TV receivers to be used for fast-scan TV operations on the 70- centimeter band?

• A. Transmitting on channels shared with cable TV
• B. Using USB and demodulating the signal with a computer sound card
• C. Transmitting on the abandoned TV channel 2
• D. Using converted satellite TV dishes

E2D07

20. What digital protocol is used by APRS?

• A. AMTOR
• B. AX.25
• C. QAM
• D. PACTOR

E0A12

21. Where should a shock-absorbing lanyard be attached to a tower when working above ground?

• A. Above the climber's head level
• B. To the belt of the fall-arrest harness
• C. To the next lowest set of guys
• D. Even with the climber's waist

E6E10

22. What advantage does surface-mount technology offer at RF compared to using through-hole components?

• A. Shorter circuit board traces
• B. Components have less parasitic inductance and capacitance
• C. Smaller circuit area
• D. All these choices are correct

E2C10

23. Why do DX stations often transmit and receive on different frequencies?

• A. To separate the calling stations from the DX station
• B. To improve operating efficiency by reducing interference
• C. All these choices are correct
• D. Because the DX station may be transmitting on a frequency that is prohibited to some responding stations

E9D07

24. What is an advantage of top loading an electrically short HF vertical antenna?

• A. Greater structural strength
• B. Lower Q
• C. Improved radiation efficiency
• D. Higher losses

E6F11

25. What is the approximate open-circuit voltage produced by a fully illuminated silicon photovoltaic cell?

• A. 1.5 volts
• B. 1.1 volts
• C. 0.5 volts
• D. 0.7 volts

E6D11

26. Which type of core material decreases inductance when inserted into a coil?

• A. Ferrite
• B. Brass
• C. Ceramic
• D. Aluminum

E9H04

27. What is the purpose of placing an electrostatic shield around a small-loop direction-finding antenna?

• A. It eliminates tracking errors caused by strong out-of-band signals
• B. It adds capacitive loading, increasing the bandwidth of the antenna
• C. It eliminates unbalanced capacitive coupling to the antenna's surroundings, improving the depth of its nulls
• D. It increases signal strength by providing a better match to the feed line

E9E01

28. Which matching system for Yagi antennas requires the driven element to be insulated from the boom?

• A. Gamma
• B. Shunt-fed
• C. T-match
• D. Beta or hairpin

E6B07

29. What causes a junction diode to fail from excessive current?

• A. Charge carrier depletion
• B. Excessive inverse voltage
• C. Insufficient forward voltage
• D. Excessive junction temperature

E4A10

30. Which trigger mode is most effective when using an oscilloscope to measure a linear power supply's output ripple?

• A. Level
• B. Edge
• C. Line
• D. Single-shot

E5D12

31. What is reactive power?

• A. Power consumed by an inductor's wire resistance
• B. Wattless, nonproductive power
• C. The power consumed in inductors and capacitors
• D. Power consumed in circuit Q

E9A10

32. Which of the following improves the efficiency of a ground-mounted quarter-wave vertical antenna?

• A. All these choices are correct
• B. Installing a ground radial system
• C. Isolating the coax shield from ground
• D. Shortening the radiating element

E4C12

33. How does a narrow-band roofing filter affect receiver performance?

• A. It improves intelligibility by using low Q circuitry to reduce ringing
• B. All these choices are correct
• C. It improves blocking dynamic range by attenuating strong signals near the receive frequency
• D. It improves sensitivity by reducing front-end noise

E6C09

34. What is used to design the configuration of a field-programmable gate array (FPGA)?

• A. Machine and assembly language
• B. Hardware description language (HDL)
• C. An auto-router
• D. Karnaugh maps

E3C09

35. What type of data is reported by amateur radio propagation reporting networks?

• A. Solar flux
• B. Magnetic declination
• C. Electric field intensity
• D. Digital-mode and CW signals

E1E06

36. Who is responsible for the proper conduct and necessary supervision during an amateur operator license examination session?

• A. Only the VE session manager
• B. Each administering VE
• C. The designated monitoring VE
• D. The VEC coordinating the session

E5C10

37. Which point on Figure E5-1 best represents the impedance of a series circuit consisting of a 400-ohm resistor and a 38-picofarad capacitor at 14 MHz?

• A. Point 6
• B. Point 4
• C. Point 2
• D. Point 5

E8B11

38. What is digital time division multiplexing?

• A. Two or more data streams share the same channel by transmitting time of transmission as the sub-carrier
• B. Two or more signals are arranged to share discrete time slots of a data transmission
• C. Two or more signals are quadrature modulated to increase bandwidth efficiency
• D. Two or more data streams are assigned to discrete sub-carriers on an FM transmitter

E8C14

39. What type of addresses do nodes have in a mesh network?

• A. Talk group
• B. Trust server
• C. Email
• D. Internet Protocol (IP)

E7F03

40. What type of digital signal processing filter is used to generate an SSB signal?

• A. A notch filter
• B. An elliptical filter
• C. An adaptive filter
• D. A Hilbert-transform filter

E4D05

41. What transmitter frequencies would create an intermodulation-product signal in a receiver tuned to 146.70 MHz when a nearby station transmits on 146.52 MHz?

• A. 146.10 MHz and 147.30 MHz
• B. 146.88 MHz and 146.34 MHz
• C. 146.34 MHz and 146.61 MHz
• D. 146.30 MHz and 146.90 MHz

E1F02

42. What privileges are authorized in the US to persons holding an amateur service license granted by the government of Canada?

• A. The operating terms and conditions of the Canadian amateur service license, not to exceed US Amateur Extra class license privileges
• B. Full privileges, up to and including those of the Amateur Extra class license, on the 80-, 40-, 20-, 15-, and 10-meter bands
• C. Full privileges of the General class license on the 80-, 40-, 20-, 15-, and 10-meter bands
• D. None, they must obtain a US license

E8A11

43. Which of the following is a measure of the quality of an analog-to-digital converter?

• A. Power factor
• B. Peak envelope power
• C. Reciprocal mixing
• D. Total harmonic distortion

E7A10

44. What is a truth table?

• A. A table of logic symbols that indicate the logic states of an op-amp
• B. A list of inputs and corresponding outputs for a digital device
• C. A diagram showing logic states when the digital gate output is true
• D. A list of inputs and corresponding outputs for an op-amp

E3A11

45. What is a typical range for tropospheric duct propagation of microwave signals?

• A. 2,500 miles
• B. 10 miles to 50 miles
• C. 100 miles to 300 miles
• D. 1,200 miles

E8D06

46. What is the advantage of including parity bits in ASCII characters?

• A. Signal-to-noise ratio is improved
• B. A larger character set is available
• C. Faster transmission rate
• D. Some types of errors can be detected

E9C01

47. What type of radiation pattern is created by two 1/4-wavelength vertical antennas spaced 1/2- wavelength apart and fed 180 degrees out of phase?

• A. A figure-eight oriented along the axis of the array
• B. Cardioid
• C. Omni-directional
• D. A figure-eight broadside to the axis of the array

E7H07

48. How can an oscillator's microphonic responses be reduced?

• A. Use NP0 capacitors
• B. Reduce noise on the oscillator's power supply
• C. Increase the gain
• D. Mechanically isolate the oscillator circuitry from its enclosure

E9G11

49. In what units are the wavelength scales on a Smith chart calibrated?

• A. In fractions of transmission line electrical frequency
• B. In fractions of transmission line electrical wavelength
• C. In fractions of antenna electrical frequency
• D. In fractions of antenna electrical wavelength

E5A08

50. What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?

• A. The voltage and current are 180 degrees out of phase
• B. The voltage and current are in phase
• C. The voltage leads the current by 90 degrees
• D. The current leads the voltage by 90 degrees