This is the Part 4 Examination Test (Advanced Electronics and Related Technology) that includes the last 4 Chapters of the book Teach Yourself Electricity and Electronics, 5th edition by Stan Gibilisco. If you are looking for a reviewer in Electronics Engineering this will definitely help you before taking the Board Exam.
Topics Included in the Test from Chapter 31 to Chapter 34
Begin the Test
1. A machine vision system that uses two cameras to allow a robot to sense depth is:
- A. Binaural.
- B. Binocular.
- C. Monaural.
- D. Monocular.
- E. High resolution.
2. A VU meter contains a scale that measures relative:
- A. Decibels.
- B. Current.
- C. Voltage.
- D. Power.
- E. Frequency.
3. A fleet of insect robots generally has:
- A. Low individual intelligence but high group intelligence.
- B. High individual intelligence but low group intelligence.
- C. Low individual intelligence and low group intelligence.
- D. High individual intelligence and high group intelligence.
- E. None of the above.
4. When two or more audio sources drive a single amplifier, it is good engineering practice to use:
- A. A synthesizer.
- B. An audio-frequency choke.
- C. An audio mixer.
- D. A graphic equalizer.
- E. A phase control.
5. The use of a stereo headset to listen to music while driving:
- A. Is good because it keeps passengers from distracting the driver.
- B. Is dangerous.
- C. Keeps the driver’s mind on the road.
- D. Is good because it prevents road rage.
- E. Is better than using car speakers.
6. A quantitative measure of the ability of a machine vision system to detect dim light is its:
- A. Selectivity.
- B. Resolution.
- C. Sensitivity.
- D. Field of view.
- E. Amplitude ratio.
7. The pitch of an audio sine-wave tone depends on:
- A. The amplitude of the disturbance.
- B. The frequency of the disturbance.
- C. The polarization of the disturbance.
- D. The medium through which the sound travels.
- E. The waveform of the disturbance.
8. Three-dimensional range plotting is generally done in:
- A. Linear coordinates.
- B. Rectangular coordinates.
- C. Polar coordinates.
- D. Celestial coordinates.
- E. Spherical coordinates.
9. A form of communications in which either party can “hear” while “talking,” thus allowing one party to instantly interrupt the other at any time, is called:
- A. Half simplex.
- B. Full simplex.
- C. Half duplex.
- D. Full duplex.
- E. Nothing. There is no such mode of communications.
10. Which of the following is an example of wireless technology?
- A. The Global Positioning System.
- B. A field-effect transistor.
- C. A junction diode.
- D. A carbon-composition resistor.
- E. Digital-to-analog conversion.
11. A satellite in a LEO system is usually:
- A. At an altitude of 22,300 miles.
- B. Geosynchronous.
- C. In a retrograde orbit.
- D. In a polar orbit.
- E. Midway between the earth and the moon.
12. Which consideration is the most important in a hi-fi audio amplifier?
- A. Power output.
- B. Efficiency.
- C. Linearity.
- D. Input impedance.
- E. Output impedance.
13. The microprocessor in a computer is part of the:
- A. Random-access memory.
- B. Central processing unit.
- C. Read-only memory.
- D. Hard drive.
- E. Internet controller.
14. An RF transducer is:
- A. Sensitive only within the range of human hearing.
- B. Sensitive only to visible light.
- C. An antenna.
- D. An analog-to-digital converter.
- E. A digital-to-analog converter.
15. Vacuum tubes might be found in:
- A. A portable headset tape player.
- B. The amplifier used by a band at a rock concert.
- C. A meter for measuring sound intensity.
- D. A robot controller.
- E. A GPS receiver.
16. One kilobyte is the same amount of data as:
- A. 1024 bits.
- B. 1024 kilobits.
- C. 1024 megabits.
- D. 1024 gigabits.
- E. None of the above.
17. Hexaphonic sound is not common, but if it were, it would most likely be used for:
- A. True three-dimensional hi-fi audio reproduction.
- B. Two-way radio communications.
- C. Ensuring that an AM/FM tuner can receive at least six stations.
- D. Improving the dynamic range of a speaker system.
- E. Robot control.
18. Range sensing and range plotting are basically the same thing except for the:
- A. Light-detecting sensitivity.
- B. Image resolution.
- C. Selectivity.
- D. Wavelength at which the system functions.
- E. Number of dimensions involved.
19. In a component-type hi-fi system, cables connecting the various units should be:
- A. As long as possible.
- B. Single-conductor only.
- C. Connected in parallel.
- D. Shielded whenever possible.
- E. Connected in series.
20. A radio antenna receives 50 watts of RF power from a transmitter, and radiates 49 watts of that power into space. Which of the following statements is true?
- A. The antenna is 98 percent efficient.
- B. The loss resistance is 1 ohm.
- C. The loss resistance is 1 percent.
- D. The ground loss is 1 watt.
- E. The antenna feed line loss is 1 watt.
21. The technical expression for robot-arm joint flexibility is:
A. The antenna is 98 percent efficient.
- A. Degrees of rotation.
- B. Radians of rotation.
- C. Degrees of flexibility.
- D. Manipulator flexibility.
- E. The work envelope.
22. In an Internet connection, the receiving computer is also known as the:
- A. Server.
- B. Host.
- C. Peer.
- D. Node.
- E. Destination.
23. The term refresh rate refers to:
- A. The number of times per second that an image is renewed in a computer display.
- B. The number of times per second that a computer memory contents change.
- C. The speed at which files on a hard drive are overwritten.
- D. The number of bits per second transferred in an Internet connection.
- E. The time it takes to recharge a nickel-cadmium electrochemical cell.
24. The “brain” of a computer is the:
- A. Hard drive.
- B. Controller.
- C. Microprocessor.
- D. CD-ROM.
- E. Monitor.
25. On a computer hard drive, the circular tracks are broken into arcs called:
- A. Clusters.
- B. Bytes.
- C. Sectors.
- D. Divisions.
- E. Storage units.
26. A robot arm moves in three dimensions according to a polar coordinate scheme with a linear elevation dimension added. This is called:
- A. Spherical coordinate geometry.
- B. Rectangular coordinate geometry.
- C. Cartesian coordinate geometry.
- D. Concentric coordinate geometry.
- E. Cylindrical coordinate geometry.
27. In a volatile memory chip:
- A. The stored data is retained even when power is removed.
- B. The stored data vanishes when power is removed.
- C. The stored data capacity is greater than that of a hard drive.
- D. The stored data capacity declines with the passage of time.
- E. The reliability has deteriorated and the chip should be replaced.
28. At low volume levels in an audio amplifier system, the dynamic range is limited primarily by the:
- A. Input impedance.
- B. Efficiency.
- C. Input power.
- D. Noise level.
- E. Frequency.
29. In a wireless system, noise always:
- A. Improves the bandwidth.
- B. Increases data transfer rate.
- C. Reduces the transmitted signal power.
- D. Degrades performance.
- E. Makes communication or data transfer impossible.
30. The noise level in a wireless receiver can be reduced using:
- A. A more powerful final amplifier.
- B. A grounded-grid configuration.
- C. Cryotechnology.
- D. The Global Positioning System.
- E. A large antenna.
31. Image resolution is an important specification in:
- A. Oscillators.
- B. Computer monitors.
- C. Receiver sensitivity.
- D. Rectifier diodes.
- E. Superheterodyne receivers.
32. According to Asimov’s laws, a robot must obey all orders from humans:
- A. No matter what.
- B. As long as nobody gets hurt or killed as a result.
- C. As long as the power is on.
- D. Unless its controller is infected with a computer virus.
- E. As long as it does not cause the robot controller to crash.
33. The use of a cell phone is prohibited in a commercial aircraft in flight because:
- A. It can annoy other passengers.
- B. It can interfere with other people’s cell phones.
- C. The interior of the aircraft produces a dangerous RF resonant cavity.
- D. It won’t work anyhow.
- E. It can interfere with flight instruments and communications.
34. A satellite can remain over the same spot on the earth’s surface at all times:
- A. Only if it orbits at an altitude of 22,300 miles.
- B. Only if it is a member of a LEO fleet.
- C. Only if its orbit is retrograde.
- D. Only if its orbit is polar.
- E. Never. An orbiting satellite always moves relative to the earth’s surface.
35. Signal-plus-noise-to-noise ratio (S + N/N) is often specified when stating a receiver’s:
- A. Selectivity.
- B. Stability.
- C. Modulation coefficient.
- D. Sensitivity.
- E. Polarization.
36. A platter is a part of a device known as:
- A. A videotape recorder.
- B. A ceramic filter.
- C. Tape memory.
- D. A hard drive.
- E. A voltage-controlled oscillator.
37. Which type of modulation consists of one voice sideband, with a suppressed carrier?
- A. AM.
- B. SSB.
- C. FM.
- D. RTTY.
- E. PCM.
38. In a machine vision system, enhanced sensitivity often involves a sacrifice in the:
- A. Image resolution.
- B. Memory capacity.
- C. Data speed.
- D. Short-wavelength response.
- E. Long-wavelength response.
39. A machine hearing system can best identify the sort of device or object producing a sound by analyzing the:
- A. Distance to the sound source.
- B. Direction from which the sound is coming.
- C. Duration of the sound.
- D. Number of sources from which the sound is coming.
- E. Waveform of the sound.
40. A ratio detector is a circuit for demodulating:
- A. AM.
- B. HM.
- C. FM.
- D. SSB.
- E. AFSK.
41. A belt drive might be found in a:
- A. Synthesized AM/FM tuner.
- B. Robotic vision system.
- C. CD player.
- D. Graphic equalizer.
- E. Turntable.
42. A robot can be considered autonomous if:
- A. It is self-contained.
- B. It has its own computer system.
- C. It does not rely on a central computer to receive its commands.
- D. Conditions A, B, and C are all true.
- E. Any one of conditions A, B, or C is true.
43. Sound waves in air consist of:
- A. Fluctuating magnetic fields.
- B. Fluctuating electric fields.
- C. Fluctuating electric and magnetic fields.
- D. Vibrating electron orbits.
- E. Vibrating molecules.
44. An AM/FM hi-fi tuner that derives its frequency from a quartz crystal and phase-locking circuits is said to be:
- A. Broadband.
- B. Synthesized.
- C. Phased.
- D. Modulated.
- E. Analog.
45. Epipolar navigation is a means by which a machine can locate objects and plot a course in:
- A. The total darkness of the deep ocean.
- B. A straight line.
- C. Three-dimensional space.
- D. A circular path.
- E. The north and south polar regions only.
46. The term robot generation refers to:
- A. The time period in which a particular type of robot was developed.
- B. A robot-controlled electric power plant.
- C. The manufacture of robots by other robots.
- D. The manufacture of robots by human beings.
- E. The number of times a robot has copied itself.
47. Which word best completes the following sentence? “The human ear/brain perceives sound volume according to the _________ of the actual intensity.”
- A. Sum.
- B. Product.
- C. Square.
- D. Square root.
- E. Logarithm.
48. Human eyes can see electromagnetic radiation over a wavelength range of approximately:
- A. 390 to 750 meters.
- B. 390 to 750 millimeters.
- C. 390 to 750 micrometers.
- D. 390 to 750 nanometers.
- E. 390 to 750 kilometers.
49. The World Wide Web is:
- A. Part of the Internet.
- B. A company that manufactures communications equipment.
- C. An agreement between nations concerning data protocols.
- D. Another name for the Global Positioning System.
- E. A satellite television network.
50. Synchronizing pulses in a video signal:
- A. Keep the brightness constant.
- B. Keep the contrast constant.
- C. Keep the image from rolling.
- D. Ensure that the colors are right.
- E. Keep the image in good focus.