Practice Exam

E1C01

1. What is the maximum bandwidth for a data emission on 60 meters?

• A. 60 Hz
• B. 1.5 kHz
• C. 170 Hz
• D. 2.8 kHz

E9C08

2. What is a folded dipole antenna?

• A. A type of ground-plane antenna
• B. A dipole configured to provide forward gain
• C. A dipole one-quarter wavelength long
• D. A half-wave dipole with an additional parallel wire connecting its two ends

E1B10

3. What frequencies are authorized to an amateur station operating under RACES rules?

• A. All amateur service frequencies authorized to the control operator
• B. Specific segments in the amateur service MF, HF, VHF and UHF bands
• C. Specific local government channels
• D. Military Auxiliary Radio System (MARS) channels

E9F06

4. What is the approximate physical length of an air-insulated, parallel conductor transmission line that is electrically 1/2 wavelength long at 14.10 MHz?

• A. 8.5 meters
• B. 10.6 meters
• C. 13.3 meters
• D. 7.0 meters

E9D08

5. What happens as the Q of an antenna increases?

• A. SWR bandwidth decreases
• B. More common-mode current is present on the feed line
• C. Gain is reduced
• D. SWR bandwidth increases

E6E11

6. What is a characteristic of DIP packaging used for integrated circuits?

• A. Package mounts in a direct inverted position
• B. Low leakage doubly insulated package
• C. Two chips in each package (Dual In Package)
• D. A total of two rows of connecting pins placed on opposite sides of the package (Dual In-line Package)

E3C08

7. What does the space weather term "G5" mean?

• A. Waning sunspot numbers
• B. An extreme geomagnetic storm
• C. Moderate solar wind
• D. Very low solar activity

E7E11

8. Which type of detector circuit is used for demodulating SSB signals?

• A. Discriminator
• B. Product detector
• C. Phase detector
• D. Phase comparator

E5D15

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

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

E4C03

10. What is the term for the suppression in an FM receiver of one signal by another stronger signal on the same frequency?

• A. Frequency discrimination
• B. Desensitization
• C. Cross-modulation interference
• D. Capture effect

E6D10

11. What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?

• A. Toroidal cores make it easier to couple the magnetic energy into other components
• B. Toroidal cores exhibit greater hysteresis
• C. Toroidal cores have lower Q characteristics
• D. Toroidal cores confine most of the magnetic field within the core material

E9B11

12. What is a disadvantage of decreasing the number of wire segments in an antenna model below 10 segments per half-wavelength?

• A. The resulting design will favor radiation of harmonic energy
• B. Ground conductivity will not be accurately modeled
• C. The computed feed point impedance may be incorrect
• D. The antenna will become mechanically unstable

E0A07

13. How may dangerous levels of carbon monoxide from an emergency generator be detected?

• A. By the yellowish appearance of the gas
• B. Any ordinary smoke detector can be used
• C. By the odor
• D. Only with a carbon monoxide detector

E2C11

14. How should you generally identify your station when attempting to contact a DX station during a contest or in a pileup?

• A. Send the call sign of the DX station three times, the words "this is," then your call sign three times
• B. Send your full call sign and grid square
• C. Send your full call sign once or twice
• D. Send only the last two letters of your call sign until you make contact

E7B03

15. Which of the following components form the output of a class D amplifier circuit?

• A. A high-pass filter to compensate for low gain at low frequencies
• B. A temperature compensating load resistor to improve linearity
• C. A matched load resistor to prevent damage by switching transients
• D. A low-pass filter to remove switching signal components

E9A07

16. What is the effective isotropic radiated power of a repeater station with 200 watts transmitter power output, 2 dB feed line loss, 2.8 dB duplexer loss, 1.2 dB circulator loss, and 7 dBi antenna gain?

• A. 252 watts
• B. 632 watts
• C. 159 watts
• D. 63.2 watts

E4E05

17. How can radio frequency interference from an AC motor be suppressed?

• A. By installing a bypass capacitor in series with the motor leads
• B. By using a ground-fault current interrupter in the circuit used to power the motor
• C. By installing a high-pass filter in series with the motor's power leads
• D. By installing a brute-force AC-line filter in series with the motor leads

E5A02

18. What is resonance in an LC or RLC circuit?

• A. The highest frequency that will pass current
• B. The frequency at which the reactive impedance equals the resistive impedance
• C. The frequency at which the capacitive reactance equals the inductive reactance
• D. The lowest frequency that will pass current

E2B11

19. What is the function of the Vertical Interval Signaling (VIS) code sent as part of an SSTV transmission?

• A. To provide vertical synchronization
• B. To identify the call sign of the station transmitting
• C. To lock the color burst oscillator in color SSTV images
• D. To identify the SSTV mode being used

E8D08

20. What parameter evaluates distortion of an AFSK signal caused by excessive input audio levels?

• A. Repeat Request Rate (RRR)
• B. Baud rate
• C. Signal-to-noise ratio
• D. Intermodulation Distortion (IMD)

E7G09

21. What will be the output voltage of the circuit shown in Figure E7-3 if R1 is 1000 ohms, RF is 10,000 ohms, and 0.23 volts DC is applied to the input?

• A. 2.3 volts
• B. -0.23 volts
• C. 0.23 volts
• D. -2.3 volts

E3A13

22. Which of these emission modes is best for auroral propagation?

• A. SSB
• B. RTTY
• C. CW
• D. FM

E9E03

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

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

E7D11

24. What is the function of the pass transistor in a linear voltage regulator circuit?

• A. Maintains nearly constant output impedance over a wide range of load current
• B. Permits a wide range of output voltage settings
• C. Maintains nearly constant output voltage over a wide range of load current
• D. Provides a stable input impedance over a wide range of source voltage

E1F01

25. On what frequencies are spread spectrum transmissions permitted?

• A. Only on amateur frequencies above 144 MHz
• B. Only on amateur frequencies above 420 MHz
• C. Only on amateur frequencies above 50 MHz
• D. Only on amateur frequencies above 222 MHz

E4A10

26. Which of the following displays multiple digital signal states simultaneously?

• A. Logic analyzer
• B. Network analyzer
• C. Modulation monitor
• D. Bit error rate tester

E6B06

27. Which of the following is a common use of a Schottky diode?

• A. As a constant voltage reference in a power supply
• B. As a rectifier in high current power supplies
• C. As a VHF/UHF mixer or detector
• D. As a variable capacitance in an automatic frequency control circuit

E6F01

28. What absorbs the energy from light falling on a photovoltaic cell?

• A. Holes
• B. Electrons
• C. Photons
• D. Protons

E4B07

29. What do the subscripts of S parameters represent?

• A. The relative time between measurements
• B. Frequency order of the measurements
• C. The port or ports at which measurements are made
• D. Relative quality of the data

E5B06

30. What is susceptance?

• A. The ratio of magnetic field to electric field
• B. The magnetic impedance of a circuit
• C. The imaginary part of admittance
• D. A measure of the efficiency of a transformer

E7H02

31. What is a microphonic?

• A. An IC used for amplifying microphone signals
• B. Distortion caused by RF pickup on the microphone cable
• C. Excess loading of the microphone by an oscillator
• D. Changes in oscillator frequency due to mechanical vibration

E2A12

32. What is the purpose of digital store-and-forward functions on an amateur radio satellite?

• A. To store digital messages in the satellite for later download by other stations
• B. To upload operational software for the transponder
• C. To delay download of telemetry between satellites
• D. To relay messages between satellites

E6C04

33. 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. All these choices are correct
• C. Its simplicity results in much less expensive devices than standard CMOS
• D. It is immune to electrostatic damage

E7C07

34. Which describes a Pi-L-network used for matching a vacuum tube final amplifier to a 50-ohm unbalanced output?

• A. A Pi-network with an additional series inductor on the output
• B. A network with only three discrete parts
• C. A matching network in which all components are isolated from ground
• D. A Phase Inverter Load network

E8C09

35. Which digital code allows only one bit to change between sequential code values?

• A. Extended Binary Coded Decimal Interchange Code
• B. Binary Coded Decimal Code
• C. Gray code
• D. Excess 3 code

E5C04

36. What coordinate system is often used to display the resistive, inductive, and/or capacitive reactance components of impedance?

• A. Maidenhead grid
• B. Faraday grid
• C. Elliptical coordinates
• D. Rectangular coordinates

E6A12

37. Why do many MOSFET devices have internally connected Zener diodes on the gates?

• A. To reduce the chance of static damage to the gate
• B. To keep the gate voltage within specifications and prevent the device from overheating
• C. To protect the substrate from excessive voltages
• D. To provide a voltage reference for the correct amount of reverse-bias gate voltage

E8A05

38. What of the following instruments would be the most accurate for measuring the RMS voltage of a complex waveform?

• A. An absorption wave meter
• B. A grid dip meter
• C. A true-RMS calculating meter
• D. A D'Arsonval meter

E8B04

39. 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. 1/3
• C. 3
• D. 6000

E2E04

40. What is indicated when one of the ellipses in an FSK crossed-ellipse display suddenly disappears?

• A. Selective fading has occurred
• B. The mark and space signal have been inverted
• C. The receiver has drifted 5 kHz from the desired receive frequency
• D. One of the signal filters is saturated

E9G04

41. What are the two families of circles and arcs that make up a Smith chart?

• A. Resistance and voltage
• B. Reactance and voltage
• C. Resistance and reactance
• D. Voltage and impedance

E1A09

42. What action or actions should you take if your digital message forwarding station inadvertently forwards a communication that violates FCC rules?

• A. All these choices are correct
• B. Notify the originating station that the communication does not comply with FCC rules
• C. Discontinue forwarding the communication as soon as you become aware of it
• D. Notify the nearest FCC Field Engineer's office

E7A11

43. What type of logic defines "1" as a high voltage?

• A. Positive Logic
• B. Reverse Logic
• C. Assertive Logic
• D. Negative logic

E4D05

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

• A. 146.34 MHz and 146.61 MHz
• B. 173.35 MHz and 139.40 MHz
• C. 146.88 MHz and 146.34 MHz
• D. 146.10 MHz and 147.30 MHz

E1D10

45. Which amateur stations are eligible to be telecommand stations of space stations (subject to the privileges of the class of operator license held by the control operator of the station)?

• A. Any amateur station designated by NASA
• B. Any amateur station so designated by the ITU
• C. All these choices are correct
• D. Any amateur station so designated by the space station licensee

E7F05

46. How frequently must an analog signal be sampled by an analog-to-digital converter so that the signal can be accurately reproduced?

• A. At the same rate as the highest frequency component of the signal
• B. At four times the rate of the highest frequency component of the signal
• C. At least twice the rate of the highest frequency component of the signal
• D. At least half the rate of the highest frequency component of the signal

E3B09

47. At what time of year is sporadic E propagation most likely to occur?

• A. Around the solstices, especially the winter solstice
• B. Around the solstices, especially the summer solstice
• C. Around the equinoxes, especially the fall equinox
• D. Around the equinoxes, especially the spring equinox

E2D02

48. Which of the following is a good technique for making meteor scatter contacts?

• A. Use of special digital modes
• B. 15-second timed transmission sequences with stations alternating based on location
• C. Short transmissions with rapidly repeated call signs and signal reports
• D. All these choices are correct

E9H11

49. What feature of a cardioid pattern antenna makes it useful for direction finding?

• A. High radiation angle
• B. A very sharp single null
• C. Broadband response
• D. A very sharp peak

E1E07

50. What should a VE do if a candidate fails to comply with the examiner's instructions during an amateur operator license examination?

• A. Allow the candidate to complete the examination, but invalidate the results
• B. Warn the candidate that continued failure to comply will result in termination of the examination
• C. Immediately terminate everyone's examination and close the session
• D. Immediately terminate the candidate's examination