Match the items in columns I and II.
Column I P: Centrifugal compressor Q: Centrifugal pump R: Pelton wheel S: Kaplan turbine Column II 1: Axial flow 2: Surging 3: Priming 4: Pure impulse A. P−2,Q−3,R−4,S−1 B. P−2,Q−3,R−1,S−4 C. P−3,Q−4,R−1,S−2 D. P−1,Q−2,R−3,S−4
The correct option is A.
Surge is the operating point at which centrifugal compressor peak head capability and minimum flow limits are reached.
Priming is needed for the centrifugal pump.
The Pelton wheel is purely an impulse turbine.
The Kaplan turbine is an axial flow turbine.