Subtopic: Functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing
Question Statement:
Which of the following statements regarding round balers for forage and straw packaging is/are CORRECT?
Options:
(A) Fixed-chamber round balers produce bales with a softer, less dense core and a compact outer shell
(B) Variable-chamber round balers utilize tensioned rubber belts to provide uniform bale density from core to circumference
(C) Net wrapping significantly reduces wrapping cycle time and weather storage losses compared to conventional twine tying
(D) Round balers operate at higher baling speeds with lower power requirement than small rectangular balers for equivalent tonnage
Answer Key:
A, B, C, D
Step-by-Step Solution & Explanation
All statements are correct:
- **A:** Fixed-chamber machines roll hay loosely until the entire volume is packed against rigid rollers, giving soft cores ideal for livestock breathability.
- **B:** Variable-chamber belt balers apply hydraulic tension immediately upon core initiation, creating uniformly dense cylinders.
- **C:** Net wrap requires only 1.5 to 2 revolutions ($15\text{--}20\text{ seconds}$) versus $40\text{--}60\text{ seconds}$ for twine, shedding rainfall better.
- **D:** Continuous rotary rolling action has higher mass throughput per PTO horsepower compared to reciprocating plunger balers.