A power chaff cutter has effective throat width450 mm, clearance150 mm, four knives, cutter speed 540 rpm and theoretical cut length10 mm. Straw at 20% moisture has bulk density60 kg/m³ through the rolls. Find theoretical capacity in ton/hour.
There are $4(540)=2160$ cuts/min. At.010 m/cut, feed speed is 21.6 m/min. Throat area is $.450(.150)=.0675$ m²,so volume flow is 1.458 m³/min. Mass flow is $1.458(60)=87.48$ kg/min, or $87.48(60)/1000=5.2488$ ton/hour. Thus **5.25,B**. The supplied bulk density already describes the moist material.
More Farm Machinery questions
GATE 2024 AG Q39– A 4.2 m combine travels3.5 km/hour at 75% field efficiency and harvests300 ha/year.…
GATE 2024 AG Q49– A single-acting disc harrow has five discs per gang and gang angle20°. At3 km/hour and 10…
GATE 2024 AG Q50– A rotary mower has 1.2 m swath at 5 km/hour. Friction losses are1.5 kW per metre swath and…
GATE 2024 AG Q54– A boom sprayer has 12 nozzles at 50 cm spacing, speed 3.5 km/hour, initial nozzle…
GATE 2023 AG Q15– Rotary-tiller total tillage energy decreases when
GATE 2023 AG Q17– Thresher cylinder separation efficiency can be improved by increasing