What air cleaner has air travel through two filters before entering intake piping?

What air cleaner has air travel through two filters before entering intake piping?

• A. Single-stage cleaner
• B. Three-stage cleaner
• C. Two-stage cleaner
• D. Dual pass cleaner

Answer: (C)

Two-stage filtration means air must pass through two filters in series before it reaches the intake piping. This arrangement provides two checkpoints: the first filter traps larger dust and debris, and the second filter catches finer particles. By sharing the filtering duty, the system delivers cleaner air to the engine or equipment, reduces wear, and can extend filter life. If only one filter were used, it would have to handle all particle sizes, which can lead to quicker clogging and less clean air. A three-stage cleaner would add yet another filter in series, which isn’t described here. A dual pass cleaner implies air going through two passes rather than two filters in sequence before entry, so it doesn’t match the described setup.

Two-stage filtration means air must pass through two filters in series before it reaches the intake piping. This arrangement provides two checkpoints: the first filter traps larger dust and debris, and the second filter catches finer particles. By sharing the filtering duty, the system delivers cleaner air to the engine or equipment, reduces wear, and can extend filter life.

If only one filter were used, it would have to handle all particle sizes, which can lead to quicker clogging and less clean air. A three-stage cleaner would add yet another filter in series, which isn’t described here. A dual pass cleaner implies air going through two passes rather than two filters in sequence before entry, so it doesn’t match the described setup.