Engine : General Subjects - 1403/1128
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| On disassembling a centrifugal pump for overhaul, the third engineer reports holes drilled axially in the back side of a single suction closed impeller. The reason for the these holes is which of the following? |
| A) To reduce the axial thrust forces on the impeller |
| B) To allow for water to recirculate for impeller cooling |
| C) To reduce the power required for the pump |
| D) To fit a puller for removing the impeller |
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