Allied & ICAR Exam Bank • ALLIED_0949 MCQ • 1 Mark

Section 6: Agricultural Process Engineering

Size Reduction and Separation

Subtopic: Size Reduction and Particle Analysis

Question Statement:

In the Tyler Standard screen scale series, the aperture dimension of any screen is related to the next smaller consecutive screen by a constant ratio of:

Options:

  • (A) $\sqrt{2} \approx 1.414$
  • (B) $2.0$
  • (C) $\sqrt{3} \approx 1.732$
  • (D) $10.0$

Answer Key:

A

Step-by-Step Solution & Explanation

Tyler screens are built with opening areas doubling consecutively ($A_2 / A_1 = 2$), which dictates that linear aperture width increases by a geometric factor of $\sqrt{2} = 1.4142$ from one mesh to the next.
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