Practice Quiz

ASVAB Science and Tech Practice Questions - Question List

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51. Television remote controls use infrared signals to allow a viewer to change channels from a distance. Which of the following best describes the operation of the remote control?
  1. decoding and storing
  2. storing and retrieving
  3. receiving and decoding
  4. encoding and transmitting
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52. What occurs in a fiber-optic cable to allow light to transmit information?
  1. boundary scattering
  2. energy dissipation
  3. surface interference
  4. total internal reflection
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53. Which of the following is not a use of fiber-optic technology?
  1. to see inside the human body
  2. to send digital data via land lines
  3. to transmit signals to satellites in space
  4. to inspect the internal mechanical parts of an airplane
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54. Advances in military technologies have often led to the development of everyday applications. Early radar systems operators noticed that objects near the radar were often heated when the radar was in use.This observation led to the development of which of the following everyday applications?
  1. microwave ovens
  2. motion detectors
  3. nuclear reactors
  4. solar collector panels
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55. Which of the following describes how power is transferred in hydraulic and pneumatic systems?
  1. Hydraulic systems use air and pneumatic systems use steam.
  2. Hydraulic systems use liquid and pneumatic systems use air.
  3. Hydraulic systems use steam and pneumatic systems use air
  4. Hydraulic systems use air and pneumatic systems use liquid.
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