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 axial-flow rotary combine harvesters, threshing and separation occur:
Options:
(A) Spirally along the longitudinal axis of an enclosed rotor rotor over multiple revolutions
(B) Across a single transverse cylinder in half a revolution
(C) Using reciprocating sieves only
(D) By chemical ripening
Answer Key:
A
Step-by-Step Solution & Explanation
Axial flow combines feed crop along rotor length, utilizing centrifugal force over multiple passes for gentle threshing and higher grain quality.