WASTEWATER COLLECTIONS LEVEL II EXAM QUESTIONS
WITH 100% ACCURATE SOLUTIONS
1) Wastewater should be pumped from a wet well
A. Based upon the time clock operation
B. Four times a day
C. Often enough to prevent wastewater from going anaerobic
D. Once a day -- Correct Answer ✔✔ C. Often enough to prevent wastewater
from going anaerobic
2) Which of the following is the most toxic to biological treatment plant organisms?
A. Aluminum
B. Calcium
C. Copper
D. Iron -- Correct Answer ✔✔ C. Copper
3) In a parallel circuit, if one unit is burned out or disconnected, the other unit will
A. Become overloaded
B. Cease to function
C. Cease to function and then resume when the unit is replaced
D. Continue to function -- Correct Answer ✔✔ D. Continue to function
4) A peristaltic pump is a type of
A. Centrifugal pump
B. Displacement pump
C. Peripheral pump
D. Reciprocating pump -- Correct Answer ✔✔ B. Displacement pump
,5) What is the most important item to check before starting a gasoline engine?
A. The gasoline level
B. The oil level
C. The water level
D. The timing -- Correct Answer ✔✔ B. The oil level
6) The velocity of flow in a force main during "pump-on" condition should be about
A. 0-1 fps
B. 1-3 fps
C. 3-6 fps
D. 9-12 fps -- Correct Answer ✔✔ C. 3-6 fps
7) Chemicals that may be used for corrosion control are
A. lime, alum, permanganate, and soda ash
B. Phosphate compounds, baking soda, lime, and soda ash
C. Phosphate compounds, caustic soda, alum, and carbon
D. Soda ash, activated carbon, and fluorides -- Correct Answer ✔✔ B. Phosphate
compounds, baking soda, lime, and soda ash
8) In the fall of the year, there is a 60*F change in temperature and you notice a
creaking sound coming from one bearing. What would cause this problem?
A. Grease velocity too low
B. Loose bearing cap nuts
C. Loose fitting
D. Movement between the cartridge and pillow block -- Correct Answer ✔✔ D.
Movement between the cartridge and pillow block
9) Maintenance required by liquid or capillary thermometers include checking for
A. Corrosion
B. Leakage
, C. Loose connection
D. Low fluid level -- Correct Answer ✔✔ B. Leakage
10) When filling the water tank on a high velocity cleaner from a fire hydrant, you should
A. Be certain the fill hose extends well into the tank
B. Be sure there is an air gap between the fill hose and the water level
C. Only fill the tank 75% full
D. Open the fire hydrant valve 50% so there will be pressure in the main to fight
fire -- Correct Answer ✔✔ B. Be sure there is an air gap between the fill hose
and the water level
11) If there is no spark at the plug of a gasoline engine, the most likely cause of the
problem is
A. Broken ignition cables
B. Carburetor is flooded
C. Poor grade gasoline
D. Water is in the fuel line of the carburetor -- Correct Answer ✔✔ A. Broken
ignition cables
12) The parts of a centrifugal pump include the
A. Diaphragm
B. Piston
C. Rotor
D. Volute -- Correct Answer ✔✔ D. Volute
13) A condition exists where a large volume of flow is pumped against a low head with a
centrifugal pump. This results in the motor getting too hot. The operator closes the
valve on the discharge side of the pump so that 20% of the original volume of water
is being pumped. Under this new condition
A. The motor temperature would remain the same
B. The motor temperature would be expected to increase
C. The motor temperature would be expected to decrease
WITH 100% ACCURATE SOLUTIONS
1) Wastewater should be pumped from a wet well
A. Based upon the time clock operation
B. Four times a day
C. Often enough to prevent wastewater from going anaerobic
D. Once a day -- Correct Answer ✔✔ C. Often enough to prevent wastewater
from going anaerobic
2) Which of the following is the most toxic to biological treatment plant organisms?
A. Aluminum
B. Calcium
C. Copper
D. Iron -- Correct Answer ✔✔ C. Copper
3) In a parallel circuit, if one unit is burned out or disconnected, the other unit will
A. Become overloaded
B. Cease to function
C. Cease to function and then resume when the unit is replaced
D. Continue to function -- Correct Answer ✔✔ D. Continue to function
4) A peristaltic pump is a type of
A. Centrifugal pump
B. Displacement pump
C. Peripheral pump
D. Reciprocating pump -- Correct Answer ✔✔ B. Displacement pump
,5) What is the most important item to check before starting a gasoline engine?
A. The gasoline level
B. The oil level
C. The water level
D. The timing -- Correct Answer ✔✔ B. The oil level
6) The velocity of flow in a force main during "pump-on" condition should be about
A. 0-1 fps
B. 1-3 fps
C. 3-6 fps
D. 9-12 fps -- Correct Answer ✔✔ C. 3-6 fps
7) Chemicals that may be used for corrosion control are
A. lime, alum, permanganate, and soda ash
B. Phosphate compounds, baking soda, lime, and soda ash
C. Phosphate compounds, caustic soda, alum, and carbon
D. Soda ash, activated carbon, and fluorides -- Correct Answer ✔✔ B. Phosphate
compounds, baking soda, lime, and soda ash
8) In the fall of the year, there is a 60*F change in temperature and you notice a
creaking sound coming from one bearing. What would cause this problem?
A. Grease velocity too low
B. Loose bearing cap nuts
C. Loose fitting
D. Movement between the cartridge and pillow block -- Correct Answer ✔✔ D.
Movement between the cartridge and pillow block
9) Maintenance required by liquid or capillary thermometers include checking for
A. Corrosion
B. Leakage
, C. Loose connection
D. Low fluid level -- Correct Answer ✔✔ B. Leakage
10) When filling the water tank on a high velocity cleaner from a fire hydrant, you should
A. Be certain the fill hose extends well into the tank
B. Be sure there is an air gap between the fill hose and the water level
C. Only fill the tank 75% full
D. Open the fire hydrant valve 50% so there will be pressure in the main to fight
fire -- Correct Answer ✔✔ B. Be sure there is an air gap between the fill hose
and the water level
11) If there is no spark at the plug of a gasoline engine, the most likely cause of the
problem is
A. Broken ignition cables
B. Carburetor is flooded
C. Poor grade gasoline
D. Water is in the fuel line of the carburetor -- Correct Answer ✔✔ A. Broken
ignition cables
12) The parts of a centrifugal pump include the
A. Diaphragm
B. Piston
C. Rotor
D. Volute -- Correct Answer ✔✔ D. Volute
13) A condition exists where a large volume of flow is pumped against a low head with a
centrifugal pump. This results in the motor getting too hot. The operator closes the
valve on the discharge side of the pump so that 20% of the original volume of water
is being pumped. Under this new condition
A. The motor temperature would remain the same
B. The motor temperature would be expected to increase
C. The motor temperature would be expected to decrease
