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

Combine harvester used for __________________

Right Option : C
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Question : 2

Which of the following are correct ?

(a) The combined harvester has a broad header at the front which gathers the crop into the combine.

(b) The cutter bar of combine harvester cuts the crops down, which leads to a revolving reel - which  gathers these cut crops.

(c) These cut crops are then pushed into the threshing area, which very quickly separated the grains from the stalks.

Right Option : B
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Explanation
Question : 3

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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Explanation
 
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