# A cylinder type chaff cutter head in a direct throw field chopper has 5 knives and diameter as 450 mm. The throat size is 40*12 cm for 15 mm theoretical length of cut with corn silage. What will be the rated capacity in megagrams per hours at 100% field efficiency?

A cylinder type chaff cutter head in a direct throw field chopper has 5 knives and diameter as 450 mm. The throat size is 40*12 cm for 15 mm theoretical length of cut with corn silage. What will be the rated capacity in megagrams per hours at 100% field efficiency?

(a) 1.7

(b) 1.08

(c) 1.23

(d) 1.50

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This interesting question is from Processing Equipments topic in division Processing Equipments of Farm Machinery

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The correct option is (b) 1.08

The explanation: Theoretical Capacity = A*v*d = W*H*L*N*n*d

V = π Dr N

N = $\frac{v}{πDr}=\frac{30}{π*0.45}$

T.C. = 0.40*0.12*0.015*30*5*340*60

T.C. = 1558.44 kg/hr = 1.55 Mg/hr

Rated capacity = $\frac{70}{100}*1.55=1.085 \frac{Mg}{hr}.$

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