Question

The impeller Diameter (\(D\)) Speed (\(N\)), Capacity (\(Q\)), Head (\(H\)) and Brake Horse Power (\(P\)) of centrifugal pump have following characteristics A. \(Q\) varies directly with \(D\) B. \(P\) varies directly with square of \(N\) C. \(H\) varies directly with cube of \(D\) D. \(H\) varies directly with square of \(D\) E. \(P\) varies directly with cube of \(n\) Choose the correct answer from the options given below:

• A. A, B, C Only
• B. B, C, D Only
• C. C, D, E Only
• D. A, D, E Only

Hint:

Pump affinity laws: \[ \boxed{ Q \propto N } \] \[ \boxed{ H \propto N^2 } \] \[ \boxed{ P \propto N^3 } \] Also: \[ \boxed{ H \propto D^2 } \]

Answer 1

The Correct Option is D