| # | What is a stator? | An electrical surge protector for large motors. | The non-moving part that surronds moving parts(rotor) of a machine. | A electrical device used to measure amperage of a motor. | A device used to start electrical machinery. | none of the above. | 2
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| 1 | Pump station maintenance reports should include | additional maintenance scheduling required. | how repairs were made. | special equipment required. | all of the above. | none of the above. | 4 |
| 2 | The normal cause of electric motor failure is | dirt. | moisture. | friction. | all of the above. | none of the above. | 4 |
| 3 | A water seal on a pump serves a dual purpose. It acts as a lubricant and it also | acts as a coolant to keep the bearing from overheating. | keeps gritty material from entering packing box. | keeps the pump primed. | all of the above. | none of the above. | 2 |
| 4 | Prior to repairing a pump's electrical circuit, which of the following actions should you take? | follow correct procedures to lock out pump. | notify your supervisor. | tell all of the operators not to activate the circuit | Turn the pump OFF | none of the above. | 1 |
| 5 | Pump maintenance includes | checking operating temperature of bearings. | checking packing gland. | operating two or more pumps of the same size alternately to equalize | all of the above. | none of the above. | 4 |
| 6 | When carrying out routine inspection on a centrifugal pump, it is noted by the operator that the bearings are excessively hot. This could be caused by | over lubrication. | slow speeds. | worn impelers. | worn packing | none of the above. | 1 |
| 7 | In a centrifugal pump, internal leakage is prevented by | impellers. | sleeves. | volutes. | wear rings. | none of the above. | 4 |
| 8 | A valve which allows water to flow in one direction only is a _______ valve. | check. | gate. | globe. | petcock. | none of the above. | 1 |
| 9 | Pipe material that is the least susceptible to corrosion by acids formed from hydrogen sulfide gas is | asbestos cement pipe (acp). | cast iron pipe (cip). | reinforced concrete pipe (rcp). | vitrified clay pipe (vcp). | none of the above. | 4 |
| 10 | Centrifugal pump parts include | diaphragm. | impeller. | piston. | rotor. | none of the above. | 2 |
| 11 | A spray nozzle on the mechanically cleaned screen is plugged. To ensure safety, prior to entering the screen housing to repair the nozzle, you should | leave a note on the circuit panel about the repair. | request assistance on the repair. | turn off and lock out motor control. | turn off local control switch. | none of the above. | 3 |
| 12 | If a fuse continues to blow, an operator should | replace it with a higher capacity fuse. | provide a ~jumper~ in the box. | inspect the affected equipment to determine the cause. | all of the above. | none of the above. | 3 |
| 13 | A fire hydrant should be closed slowly to avoid | excessive head loss. | excessive wear. | injury to the operator. | water hammer. | none of the above. | 4 |
| 14 | In electrical circuits a(n) ______ is used to reduced the voltage where necessary. | ammeter. | thermal overload. | transformer. | voltmeter. | none of the above. | 3 |
| 15 | Wear rings are installed in a pump to | hold the shaft in position. | keep the impeller in place. | concentrate wear on an economically replaceable part. | wear out rings instead of sleeves. | none of the above. | 3 |
| 16 | Globe valves are used for all of the following purposes, except | air-vacuum control. | flow regulation. | pressure regulation. | pump control. | none of the above. | 1 |
| 17 | A positive displacement sludge pump should never be placed into operation | without being primed. | with the discharge valve closed. | with the discharge valve opened. | none of the above. | | 2 |
| 18 | Closing a valve too quickly causes | a surge in the line. | no problems in the piping. | pipe fittings to become more secure. | the wastewater to go septic. | none of the above. | 1 |
| 19 | Every day the operator of a small wastewater treatment plant should | clean settling basins and dispose of sludge. | determine that all plant equipment is operational. | replenish chemical stock. | all of the above. | none of the above. | 2 |
| 20 | A pump is delivering at less than the expected rate of discharge. Which of the causes listed below is incorrect? | speed of motor too low. | pump not primed. | impeller clogged. | discharge head too low. | none of the above. | 4 |
| 21 | Metal pipes often fail because of | back siphonage. | browning movement. | galvanic action. | reverse osmosis. | none of the above. | 3 |
| 22 | When a fire hydrant is operated, it should be | just opened enough to have a flow. | opened fully. | opened halfway. | regulated to flow required. | none of the above. | 2 |
| 23 | The most important effect of over lubrication has on horizontal centrifugal pump bearings | will result in smoother and more efficient pump operation. | will not make any difference in the operation of the pump. | will be wasted. | may cause overheating and failure of the bearing. | none of the above. | 4 |
| 24 | If packing is not maintained properly, | cavitation damage will result. | impeller will corrode. | loss of suction due to air being allowed to enter the pump. | shaft or shaft sleeve will be damaged. | none of the above. | 4 |
| 25 | What equipment should be calibrated in a treatment plant? | chemical feeders. | continuous recording chlorine residual analyzer. | continuous recording pressure gauges. | all of the above. | none of the above. | 4 |
| 26 | Special parts that should be carried by the maintenance worker are usually listed in the | machine blue print. | machine history record. | machine manufacturer's manual. | work order. | none of the above. | 3 |
| 27 | Pump station maintenance reports should include | additional maintenance scheduling required. | how repairs were made. | special equipment required. | all of the above. | none of the above. | 4 |
| 28 | Disaster planning is | having manuals ready so they can be read if a disaster occurs. | something that, if properly done, will not need to be revised. | useful in reducing confusion in the event of a disaster. | all of the above. | none of the above. | 2 |
| 29 | All of the following are types of starters for electrical motors except | actuator. | autotransformer. | reduced voltage. | resistors. | none of the above. | 1 |
| 30 | Instrumentation friction discs or clutch surfaces should be | frequently brushed briskly with a solution of water and soda. | kept free of oil. | oiled frequently. | roughened with emery cloth as this prevents slippage. | none of the above. | 2 |
| 31 | If a generator will not start, check for | loose terminal connections. | shaft binding or sticking. | tripped circuit breakers. | all of the above. | none of the above. | 4 |
| 32 | Steel tanks may be protected from rusting by | alternately wetting and drying walls. | maintaining humidity in the tanks. | protective coatings. | washing tank walls. | none of the above. | 3 |
| 33 | Occasionally some of the people on a work crew will indulge in active horseplay. This should be. | discouraged because some of theworkers might not like it. | encouraged because it promotes good fellowship. | permited as it is a form of relaxation. | stopped immediately becasue it may cause an accident. | none of the above. | 4
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