CWEA Maintenance Technologist 1 Practice Exam
Which process is most commonly used for small pipe maintenance welding? CORRECT
ANSWER: D. Oxyacetylene gas welding
What is the proper definition of an engine? CORRECT ANSWER: B. It is machine designed to
convert energy into useful mechanical motion
What is wet stacking and how can it be prevented? CORRECT ANSWER: C.Wet stacking is
a condition in diesel engines in which unburned fuel passes on into the exhaust system.[1] The
word "stacking" comes from the term "stack" for exhaust pipe or chimney stack. The oily
exhaust pipe is therefore a "wet stack".
To check a flywheel face runout, where should the dial indicator be positioned? CORRECT
ANSWER: B. The base of the bell housing and the pointer on the flywheel face
If a 38-tooth gear running at 360 rpm is driving another gear at 144 rpm, what is the number
of teeth on the driven gear? CORRECT ANSWER: B. 95
Which of the following is required for a sealed ball bearing? CORRECT ANSWER: C. It
does not need to be lubricated under normal use
A DAFT is an acronym meaning? CORRECT ANSWER: A. Dissolved Air Flotation Thickener
What is the governing agency that permits odor control systems? CORRECT ANSWER: D.
AQMD
At what pressure rating would you use a blower instead of a fan? CORRECT ANSWER: B. 7psi
Which of the following valves is unsuitable for high-pressure flow? CORRECT ANSWER: C. A
needle valve
A sodium hypochlorite tank's full working capacity is 23,000 gallons. Its current level is at 1,200
gallons. How many gallons does the delivery driver need to add to bring it to 70% capacity?
CORRECT ANSWER: A. 14,900 gal
What is the result if 6/8" is converted to decimal form? CORRECT ANSWER: A. .75
What is the conversion of 100 Celsius to Fahrenheit? CORRECT ANSWER: A. 212
If 17.32v are applied across a resistance of 50 ohms, how much power is expanded in the
resistor? CORRECT ANSWER: C. 6.0 watts
A standard steel plate is 4' wide, 8' long, 1" thick. If steel weighs 490 lbs/ft3, what is the total
weight of this plate? CORRECT ANSWER: A. 1,306.6lbs
, What is the volume in cubic feet of carbon media that is 6' thick in a clarifier that has a 50'
diameter and 20' deep? Round answer to the nearest cubic foot. CORRECT ANSWER: C.
11,781 ft3
A 150-Watt, 120-volt lamp burns constantly for 8 hours at a rated voltage. What is the energy
used in watts/hour? CORRECT ANSWER: C. 1200 watts/hour
Which of the following is 12/16 equal to? CORRECT ANSWER: A. 3/4
The property of an electrical circuit restricts the flow of current and: CORRECT ANSWER: C.
resistance
Which of the following can burn the insulation on the supply connections at the motor starter?
CORRECT ANSWER: C. the connections are loose or have poor contacts
Where do you start troubleshooting when an electrical motor fails to operate after observing
a mechanical failure? CORRECT ANSWER: C. at the power source
What does NEC stand for? CORRECT ANSWER: A. National Electrical Code
What is a pipe union typically used for? CORRECT ANSWER: A. it is used to connect pipes
Which of the following circuits has more than one path for the current to flow? CORRECT
ANSWER: B. Parallel Circuit
Overloading of an electrical circuit may be caused by which of the following? CORRECT
ANSWER: C. Connecting loads that draw too much current
What kind of current is stored in a 9-volt battery? CORRECT ANSWER: B. Direct current
What does GFI stand for? CORRECT ANSWER: C. Ground fault interrupter
What does EMT stand for? CORRECT ANSWER: A. Electrical Metal Tubing
What device would be used to measure AC current flow in a large diameter conductor?
CORRECT ANSWER: B. A clamp-on type ammeter
What is the purpose of electrical interlock switches on panel doors? CORRECT ANSWER: A.
To interrupt local power for personnel protection
Which of the following actions should be taken before working on controls that may disrupt
plant operations? CORRECT ANSWER: C. Have an operator present (this is not an action)
Which process is most commonly used for small pipe maintenance welding? CORRECT
ANSWER: D. Oxyacetylene gas welding
What is the proper definition of an engine? CORRECT ANSWER: B. It is machine designed to
convert energy into useful mechanical motion
What is wet stacking and how can it be prevented? CORRECT ANSWER: C.Wet stacking is
a condition in diesel engines in which unburned fuel passes on into the exhaust system.[1] The
word "stacking" comes from the term "stack" for exhaust pipe or chimney stack. The oily
exhaust pipe is therefore a "wet stack".
To check a flywheel face runout, where should the dial indicator be positioned? CORRECT
ANSWER: B. The base of the bell housing and the pointer on the flywheel face
If a 38-tooth gear running at 360 rpm is driving another gear at 144 rpm, what is the number
of teeth on the driven gear? CORRECT ANSWER: B. 95
Which of the following is required for a sealed ball bearing? CORRECT ANSWER: C. It
does not need to be lubricated under normal use
A DAFT is an acronym meaning? CORRECT ANSWER: A. Dissolved Air Flotation Thickener
What is the governing agency that permits odor control systems? CORRECT ANSWER: D.
AQMD
At what pressure rating would you use a blower instead of a fan? CORRECT ANSWER: B. 7psi
Which of the following valves is unsuitable for high-pressure flow? CORRECT ANSWER: C. A
needle valve
A sodium hypochlorite tank's full working capacity is 23,000 gallons. Its current level is at 1,200
gallons. How many gallons does the delivery driver need to add to bring it to 70% capacity?
CORRECT ANSWER: A. 14,900 gal
What is the result if 6/8" is converted to decimal form? CORRECT ANSWER: A. .75
What is the conversion of 100 Celsius to Fahrenheit? CORRECT ANSWER: A. 212
If 17.32v are applied across a resistance of 50 ohms, how much power is expanded in the
resistor? CORRECT ANSWER: C. 6.0 watts
A standard steel plate is 4' wide, 8' long, 1" thick. If steel weighs 490 lbs/ft3, what is the total
weight of this plate? CORRECT ANSWER: A. 1,306.6lbs
, What is the volume in cubic feet of carbon media that is 6' thick in a clarifier that has a 50'
diameter and 20' deep? Round answer to the nearest cubic foot. CORRECT ANSWER: C.
11,781 ft3
A 150-Watt, 120-volt lamp burns constantly for 8 hours at a rated voltage. What is the energy
used in watts/hour? CORRECT ANSWER: C. 1200 watts/hour
Which of the following is 12/16 equal to? CORRECT ANSWER: A. 3/4
The property of an electrical circuit restricts the flow of current and: CORRECT ANSWER: C.
resistance
Which of the following can burn the insulation on the supply connections at the motor starter?
CORRECT ANSWER: C. the connections are loose or have poor contacts
Where do you start troubleshooting when an electrical motor fails to operate after observing
a mechanical failure? CORRECT ANSWER: C. at the power source
What does NEC stand for? CORRECT ANSWER: A. National Electrical Code
What is a pipe union typically used for? CORRECT ANSWER: A. it is used to connect pipes
Which of the following circuits has more than one path for the current to flow? CORRECT
ANSWER: B. Parallel Circuit
Overloading of an electrical circuit may be caused by which of the following? CORRECT
ANSWER: C. Connecting loads that draw too much current
What kind of current is stored in a 9-volt battery? CORRECT ANSWER: B. Direct current
What does GFI stand for? CORRECT ANSWER: C. Ground fault interrupter
What does EMT stand for? CORRECT ANSWER: A. Electrical Metal Tubing
What device would be used to measure AC current flow in a large diameter conductor?
CORRECT ANSWER: B. A clamp-on type ammeter
What is the purpose of electrical interlock switches on panel doors? CORRECT ANSWER: A.
To interrupt local power for personnel protection
Which of the following actions should be taken before working on controls that may disrupt
plant operations? CORRECT ANSWER: C. Have an operator present (this is not an action)
