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in Farm Machinery by (38.9k points)
An air blast of sprayer is to be operated at 3 km/h and application rate is 18 l/tree. The spacing is 9m*9m and each nozzle delivers 5 lit/min and operating process of 4*10^5 N/m^2. If one half row is sprayed from each side of the machine. How many sprayers will be needed?

(a) 30

(b) 50

(c) 20

(d) 40

I had been asked this question in class test.

My question is from Plant Protection Equipments topic in chapter Plant Protection Equipments of Farm Machinery

1 Answer

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Best answer
The correct option is (d) 40

Best explanation: Time of spacing/tree = \(\frac{9*18*60}{3*5} \)  h

Time of spray/tree = \(\frac{Q}{n*Qr} \)

\(\frac{9*18*60}{3*5} = \frac{18}{n*5} \)

N = 20

For both sides = 2*20 = 40

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