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Do not refer to the text when taking this 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.
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670 Test: Part four 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.
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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.
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Test: Part four 671 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. C. D. E. Efficiency. Linearity. Input impedance. Output impedance.
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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.
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672 Test: Part four 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. 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.
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Test: Part four 673 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.
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674 Test: Part four 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.
Test: Part four 675 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. C. D. E. Stability. Modulation coefficient. Sensitivity. 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.
676 Test: Part four 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. C. D. E. Robotic vision system. CD player. Graphic equalizer. 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.
Test: Part four 677 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.
678 Test: Part four C. Keep the image from rolling. D. Ensure that the colors are right. E. Keep the image in good focus. A good score is at least 37 correct. Answers are in the back of the book. It s best to have a friend check your score the first time, so you won t memorize the answers if you want to take the test again.
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