WASTE WATER GRADE 2 NEWEST 2025 ACTUAL EXAM COMPLETE 80 QUESTIONS AND CORRECT
Meters should be _______________ and performance cross checked regularly to ensure accurate meter
reading. - (answer) Calibrated
a screen may be placed at the _______end of a pump to protect the pump from clogging and undue
wear to the impeller. - (answer) Suction
The number one cause of motor failure is_______? - (answer) Over-greasing bearings.
Checking______ should be a regular procedure in pump maintenance, due to piping changes, bolts
loosening or prevention of pump, and coupling wear. - (answer) Alignment
What is added to a pump to plug internal liquid leaking? - (answer) Wear ring
Never operate a positive displacement pump against_________ - (answer) A closed discharge valve
How much water should be leaking from a packing gland on a pump? - (answer) One drop per second
At least 75% of centrifugal pump troubles are traced to_____________? - (answer) The suction side of
the pump
Each additional packing should be placed around a pump shaft - (answer) Staggered at 180 degrees
Water seal packing glands should be protected with a ____________ - (answer) Clean water supply
form an outside source
If two or more pumps of the same size are installed for an application how should they be operated? -
(answer) The pumps should be alternated in operation to equalize wear.
If any part of a mechanical seal is worn you should replace_________? - (answer) The entire seal
, WASTE WATER GRADE 2 NEWEST 2025 ACTUAL EXAM COMPLETE 80 QUESTIONS AND CORRECT
Always make sure that a mechanical seal is ____________ before starting a pump. - (answer) Filled
with water
Keep belts and sheaves free of ______ to prevent deterioration. - (answer) OIl
When replacing v-belts that are frayed, worn, or cracked you must_____? - (answer) Replace all the
belts with a matched set.
A magnetic flow meter, a type of velocity meter is used to measure - (answer) Liquid and sludge in
closed pipes
A diaphragm or piston metering device, a type of displacement unit is used to measure? - (answer)
Gases and liquids in closed pipes (plant water or digester gas)
A measuring device used in partially filled channels or basins - (answer) Weirs or Flumes
What is the most important maintenance item-plant grounds, mechanical equipment or building
maintenance? - (answer) Mechanical equipment
Chlorine and sulfur dioxide leaks can be detected by? - (answer) The presence of ammonia
Mechanical seals are not supposed have any___________? - (answer) Water leaks
Both ends of sludge piping should never be_______________,to avoid rupture - (answer) Closed
completely
How do you know if you may have a faulty check valve? - (answer) The pump shaft will spin backwards
What should be checked before starting a pump? - (answer) The position of all valves
How do you test for voltage? - (answer) Using a multimeter
Meters should be _______________ and performance cross checked regularly to ensure accurate meter
reading. - (answer) Calibrated
a screen may be placed at the _______end of a pump to protect the pump from clogging and undue
wear to the impeller. - (answer) Suction
The number one cause of motor failure is_______? - (answer) Over-greasing bearings.
Checking______ should be a regular procedure in pump maintenance, due to piping changes, bolts
loosening or prevention of pump, and coupling wear. - (answer) Alignment
What is added to a pump to plug internal liquid leaking? - (answer) Wear ring
Never operate a positive displacement pump against_________ - (answer) A closed discharge valve
How much water should be leaking from a packing gland on a pump? - (answer) One drop per second
At least 75% of centrifugal pump troubles are traced to_____________? - (answer) The suction side of
the pump
Each additional packing should be placed around a pump shaft - (answer) Staggered at 180 degrees
Water seal packing glands should be protected with a ____________ - (answer) Clean water supply
form an outside source
If two or more pumps of the same size are installed for an application how should they be operated? -
(answer) The pumps should be alternated in operation to equalize wear.
If any part of a mechanical seal is worn you should replace_________? - (answer) The entire seal
, WASTE WATER GRADE 2 NEWEST 2025 ACTUAL EXAM COMPLETE 80 QUESTIONS AND CORRECT
Always make sure that a mechanical seal is ____________ before starting a pump. - (answer) Filled
with water
Keep belts and sheaves free of ______ to prevent deterioration. - (answer) OIl
When replacing v-belts that are frayed, worn, or cracked you must_____? - (answer) Replace all the
belts with a matched set.
A magnetic flow meter, a type of velocity meter is used to measure - (answer) Liquid and sludge in
closed pipes
A diaphragm or piston metering device, a type of displacement unit is used to measure? - (answer)
Gases and liquids in closed pipes (plant water or digester gas)
A measuring device used in partially filled channels or basins - (answer) Weirs or Flumes
What is the most important maintenance item-plant grounds, mechanical equipment or building
maintenance? - (answer) Mechanical equipment
Chlorine and sulfur dioxide leaks can be detected by? - (answer) The presence of ammonia
Mechanical seals are not supposed have any___________? - (answer) Water leaks
Both ends of sludge piping should never be_______________,to avoid rupture - (answer) Closed
completely
How do you know if you may have a faulty check valve? - (answer) The pump shaft will spin backwards
What should be checked before starting a pump? - (answer) The position of all valves
How do you test for voltage? - (answer) Using a multimeter
