Allied & ICAR Exam Bank • ALLIED_1059 MCQ • 1 Mark

Section 2: Farm Machinery

Farm Machinery

Subtopic: Harvesting and Threshing Equipment

Question Statement:

The reel index of a combine harvester header is defined as the ratio of:

Options:

  • (A) Linear peripheral speed of reel bat to forward speed of combine
  • (B) Forward speed of combine to cutter bar stroke frequency
  • (C) Reel diameter to cutter bar height
  • (D) Grain feeding rate to thresher cylinder width

Answer Key:

A

Step-by-Step Solution & Explanation

Reel index $K = \frac{v_r}{v_f} = \frac{\text{Reel peripheral tip speed}}{\text{Forward speed of combine}}$. For proper gathering without knocking grain out, $K$ is typically between $1.10$ and $1.25$.
← Previous (ALLIED_1058) Next (ALLIED_1060) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test