ANS:D - atmospheric humidity.

Screen capacity is not a function of atmospheric humidity.

Explanation:

• Screen Capacity: Refers to the amount of material that a screen can handle effectively per unit time. It is influenced by various factors related to the screen's design and operating conditions.
• Factors Affecting Screen Capacity:
  • Opening Size: The size of the openings in the screen affects the throughput and efficiency of material separation.
  • Screening Mechanism: The method by which particles are separated on the screen surface (such as vibration, gravity, or centrifugal force) affects the capacity.
  • Screening Surface: The quality and condition of the screen surface (material, tension, wear) impact its ability to efficiently separate particles.
  • Atmospheric Humidity: Atmospheric humidity does not directly affect the screen capacity. While high humidity may influence the behavior of some materials (e.g., agglomeration of fine particles), it does not alter the fundamental capacity of the screen to handle material throughput.