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Which of the following statements is true when comparing an LCD to a CRT display in the EFIS?
  • A
    LCD has a lower voltage supply than CRT, so it uses less power.
  • B
    CRT displayed images can only be seen in a dark cockpit.
  • C
    Modern commercial aircraft are mostly equipped with CRT displays.
  • D
    LCD displays can provide less information because it is only refreshed once per second.
An electronic flight instrument system (EFIS) is a flight deck instrument display system in which the display technology used is electronic rather than electromechanical. Although cathode ray tube (CRT) displays were used at first, liquid crystal displays (LCD) are now more common.
  • Cathode Ray Tubes (CRT) are known to be too bulky and impractical to fit. During its operation, compared to LCD, CRT displays require more power and generate a lot of heat.

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