• question_answer   A centrifugal blower delivering $\text{Q}{{\text{m}}^{\text{3}}}\text{/s}$ against a head of H m is driven at half the original speed. The new head and discharge would be: A) $H\,and\,Q/2$              B) $\frac{H}{4}\,and\,\frac{Q}{2}$C) $\frac{H}{2}\,and\,\frac{Q}{8}$                       D) $H\,and\,\frac{Q}{4}$

Correct Answer: B

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