Subtopic: Calculation of performance parameters – field capacity, efficiency, performance index, application rate and losses
Question Statement:
While operating a pedal thresher, 14 kg of paddy seed remained unthreshed for a throughput of 112 kg. If the quantity of the threshed seed obtained was 70 kg, the threshing efficiency in percent is
Options:
(A) 62.50
(B) 80.00
(C) 83.33
(D) 87.50
Official Answer Key:
C
Step-by-Step Solution & Explanation
Threshing efficiency = [threshed seed weight / (threshed seed weight + unthreshed seed weight)] × 100
= [70 / (70 + 14)] × 100 = (70/84) × 100 = 83.33%. Answer: (C).
(Note: the balance of the 112 kg throughput, 112−84 = 28 kg, is straw/chaff and non-seed material, which does not enter the threshing-efficiency ratio.)
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