Subtopic: Functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing
Question Statement:
In the cleaning shoe of a combine harvester, the chaffer sieve primarily separates:
Options:
(A) Coarse chaff, pieces of straw, and unthreshed heads from clean grain
(B) Dust from air
(C) Water from grain
(D) Stones from soil
Answer Key:
A
Step-by-Step Solution & Explanation
The upper vibrating chaffer sieve allows grain to fall through while floating long straw pieces out the rear over air blast.