Air Systems Cleaning Specialist (ASCS) — Question 18

What type of supply fan transfers large volumes of air with a minimal wheel diameter?

Answer options

• A. Backward-inclined fan
• B. Forward-curved fan
• C. Axial fan
• D. Radial fan

Correct answer: B

Explanation

The correct answer is B, as forward-curved fans are specifically designed to handle high volumes of air at low pressures, making them suitable for applications requiring larger airflow with smaller wheel diameters. In contrast, backward-inclined fans are more efficient at higher pressures, axial fans typically require larger diameters for significant airflow, and radial fans are not optimized for high volume transfers.