A fast centrifugal pump impeller will have
- Aforward facing blades
- Bradial blades
- Cbackward facing bladesCorrect
- Dpropeller type blades
Solution
Concept
Impeller blade type
Step-by-step solution
1. Centrifugal pump impellers use backward-curved blades for stability and efficiency.
Explanation
Backward-facing blades give the best efficiency.
Why the other options are wrong
Forward blades are unstable.
Shortcut
Backward curved.
Correct answer: C) backward facing blades