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The specific speed (Ns) of a centrifugal pump is given by

ANQH23\frac{N\sqrt{Q}}{H^{\frac23}}

BNQH34\frac{N\sqrt{Q}}{H^{\frac34}}

CNQH\frac{N\sqrt{Q}}{H}

DNQH54\frac{N\sqrt{Q}}{H^{\frac54}}

Answer:

NQH34\frac{N\sqrt{Q}}{H^{\frac34}}

Read Explanation:

The specific speed (NS) of a centrifugal pump is given by NQH34\frac{N\sqrt{Q}}{H^{\frac34}}

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