Question

The ability of a screen in closely separating the feed into overflow and underflow according to its size is known as

• A. Ideal screen
• B. Screen effectiveness
• C. Rotary screen
• D. Screening

Hint:

Screen effectiveness measures how efficiently a screen separates material into oversize and undersize fractions.

Answer 1

The Correct Option is B

Step 1: Screening is a size separation process.

Step 2: In screening, material is separated into oversize and undersize fractions.

Step 3: Overflow generally refers to material retained over the screen, while underflow refers to material passing through the screen openings.

Step 4: The ability of the screen to separate feed accurately according to size is called screen effectiveness.

Step 5: Therefore, the correct answer is: \[ \boxed{\text{Screen effectiveness}} \]