effective area

Definitions

Construction

  • The net area of an air inlet or outlet system through which air can pass. The effective area equals the free area of the device multiplied by the coefficient of discharge.
  • The cross-sectional area of a structural member, calculated to resist applied stress.

Electronics

  • For an antenna oriented in a given direction, the ratio of the available power available at the terminals to the power per unit area of the incident wave from that direction.
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