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:
The cleaning shoe of a combine harvester consists of two reciprocating sieves and a fan, namely the:
Options:
(A) Chaffer sieve (upper) and cleaning sieve (lower)
(B) Rough sieve and water separator
(C) Disc cutter and straw shredder
(D) Grain tank auger
Answer Key:
A
Step-by-Step Solution & Explanation
Chaffer sieve allows unthreshed heads and grains to fall while blowing chaff off; lower sieve cleans grain cleanly into clean grain auger.