| # | A pump needs new packing? | if no more packing will fit into the stuffing box. | if there is any leakage from the packing gland. | when the gland follower is pulled all the way down. | if it is 1 month old. | | 3
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| 1 | A pump may be damaged if it is started with the discharge valve closed, if the pump is? | a positive-displacement pump. | a turbine pump. | a centrifugal pump. | an axial flow pump. | | 1 |
| 2 | Cavitation is a problem with pumps. What can be done to prevent it from occuring? | reduce the suction head. | clear the blow-off valve. | reduce the suction lift. | place another pump on the line. | | 3 |
| 3 | An operator heard a pinging sound coming from a pump. What is a possible cause? | corrosion. | cavitation. | turbidity. | algae. | | 2 |
| 4 | The packing around the shaft of a centrifugal pump? | should be replaced once a month. | should be kept as tight as possible. | is not subject to wear and remains in good condition. | should be tightened just enough to allow an occasional drop. | | 4 |
| 5 | Vertical turbine pumps that are used in wells may be oil lubricated or water lubricated. Operators should use extreme care not to start any water-lubricated pump before making sure that the? | valve on the discharge side closed. | bearings are dry. | valve on the suction side is closed. | bearing are wet. | | 4 |
| 6 | A certrifugal-type pump should never be run empty except momentarily because? | a serious counter-pressure would be built up. | the parts lubricated by water would be damaged. | it is useless to run a pump without water. | excessive end thrust of shaft would damage thrust bearing. | | 2 |
| 7 | When a centrifugal pump with new packing is started and the packing seems to leak air, the proper procedure is to? | stop the motor and repack the stuffing box. | put in more packing. | put in some heavy oil and gradually tighten the gland. | ignore the condition. | | 3 |
| 8 | Corrosive chemicals are usually pumped with a? | plunger-type pump. | piston-type pump. | rotary-type pump. | diaphragm-type pump. | | 4 |
| 9 | Which of the following pumps is not considered to be a velocity-type pump? | centrifugal. | axial flow. | radial flow. | reciprocating. | turbine. | 4 |
| 10 | The component of a centrifugal pump that is sometimes installed on the end of the suction pipe in order to hold the priming is known is a? | casing. | ventilator. | foot valve. | drain. | | 3
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