In terms of speed of rotation of the impeller N, discharge Q and change in total head H, through the machine, the specific speed for pump is ____

In terms of speed of rotation of the impeller N, discharge Q and chang

1.	In terms of speed of rotation of the impeller N, discharge Q and change in total head H, through the machine, the specific speed for pump is ____
A.	<table><tr><td rowspan="2">N<sub>s</sub> = </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>H<sup>4/3</sup></center></td><td rowspan="2"></td></tr><tr><td style="text-align: center;">N <span style=" text-decoration: overline;">Q</span></td></tr></table>
B.	<table><tr><td rowspan="2">N<sub>s</sub> = </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>NQ</center></td><td rowspan="2"></td></tr><tr><td style="text-align: center;">H<sup>4/3</sup></td></tr></table>
C.	<table><tr><td rowspan="2">N<sub>s</sub> = </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>N <span style=" text-decoration: overline;">Q</span></center></td><td rowspan="2"></td></tr><tr><td style="text-align: center;">H<sup>4/3</sup></td></tr></table>
D.	<table><tr><td rowspan="2">N<sub>s</sub> = </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>N <span style=" text-decoration: overline;">Q</span></center></td><td rowspan="2"></td></tr><tr><td style="text-align: center;">H</td></tr></table>
Answer» D. <table><tr><td rowspan="2">N<sub>s</sub> = </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>N <span style=" text-decoration: overline;">Q</span></center></td><td rowspan="2"></td></tr><tr><td style="text-align: center;">H</td></tr></table>

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In terms of speed of rotation of the impeller N, discharge Q and change in total head H, through the machine, the specific speed for pump is ____

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