Combine Harvester


 
 
Concept Explanation
 

Combine Harvester

Modern farming involves use of a machine; called combine harvester. This machine harvests, threshes and winnows in a single operation. Combine harvesters are used in developed countries; like the USA. In India, such machines can be seen in the farms of Punjab, Haryana and Uttar Pradesh.

Construction :- 

The combined harvester has a wide header at the front which gathers the crop into the combine. A reet within the header moves the crop towards the cutter bar where it is sliced at the base. The grain is then moved up the conveyor to the threshing drums where they are separated from the stalks.

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Sample Questions
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Question : 1

Which of the following are correct ?

(a) Modern farming involves use of a machine; called combine harvester.

(b) This machine harvests, threshes and winnows in a single operation.

(c) Combine harvesters are used in developed countries; like the America . In India, such machines can be seen in the farms of Bihar, Rajsthan and Andra pardesh .

Right Option : A
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Question : 2

Combine harvesters are used in ____________ countries.

Right Option : B
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Explanation
Question : 3

The combined harvester has a _____________ header at the front which gathers the crop into the combine.

Right Option : C
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Explanation
 
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