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 primary function of the straw walker in a conventional combine harvester is to:
Options:
(A) Separate free grain trapped within the mass of discharged threshed straw using agitated reciprocating motion
(B) Thresh unthreshed heads
(C) Blow chaff out of the machine
(D) Elevate clean grain to the tank
Answer Key:
A
Step-by-Step Solution & Explanation
Straw walkers toss straw repeatedly over saw-tooth racks, letting detached kernels fall through open grids onto return pans.