Practice Quiz

MTEL Technology and Engineering - Question List

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61.
The lenses of a pair of binoculars perform their basic function primarily as a result of:
  1. Dispersion
  2. Refraction
  3. Reflection
  4. Diffraction
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62.
Typically, lasers in DVD players operate at a wavelength of about 640 nm. Lasers in CD players typically operate at a wavelength of 780 nm. The reason for the smaller wavelength in DVDs is that the smaller wavelength:
  1. Results in higher resolution.
  2. Allows for compact equipment.
  3. Saves on energy usage.
  4. Has greater burning power.
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63.
In fiber-optic telephone systems, messages are transmitted along optical cables as:
  1. Light pulses.
  2. Electrical current.
  3. Changes in wavelength.
  4. Changes in color.
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64.
A compression gauge is most likely to be used to diagnose a problem in the:
  1. Ignition coil.
  2. Crankcase.
  3. Engine cylinders.
  4. Fuel system.
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65.
Which of the following best describes the primary reason for using multistaging in launching rockets?
  1. Lower stages that have become depleted of fuel provide an increase in the efficiency of upper stages.
  2. Stages can be recovered and reused after they are jettisoned and fall back to Earth.
  3. Stages can be recovered and reused after they are jettisoned and fall back to Earth.
  4. Stages provide additional thrust as they fall away from the rest of the rocket.
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