Q1: Feed size of ≥ 25 cms can be accepted by

ANS:D - jaw crusher

A feed size of ≥ 25 cm can be accepted by a jaw crusher.

Explanation:

• Jaw Crusher: Jaw crushers are primary crushers designed to handle large feed sizes, often up to several tens of centimeters in diameter. They are used for initial size reduction of large pieces of material before further processing or secondary crushing.
• Ball Mill: Typically accepts much smaller feed sizes compared to a jaw crusher, generally up to a few centimeters in diameter.
• Rod Mill: Accepts feed sizes similar to or slightly larger than those accepted by ball mills, typically a few centimeters in diameter.
• Fluid Energy Mill: Designed for fine grinding of materials and typically accepts smaller feed sizes compared to jaw crushers.

Jaw Crusher Characteristics:

• Jaw crushers are robust machines capable of handling large feed sizes and are designed to crush hard materials efficiently.
• They operate by compressing the feed material between a fixed jaw and a moving jaw, which creates mechanical pressure and breaks the material into smaller pieces.
• Jaw crushers are commonly used in mining, quarrying, recycling, and construction industries for primary crushing of materials.