MECHANICAL TECHNOLOGIST GRADE 1
CWEA CERTIFICATION EXAM STUDY 2025
WITH REAL QUESTIONS AND WELL
VERIFIED ANSWERS || GUARANTEED PASS ||
ALREADY GRADED A+ || LATESTT UPDATE
What is the definition of atomic weight? - ANSWER-The sum of the number of
protons and the number of neutrons in the nucleus of an atom. Atomic weights
of elements are found on the periodic table.
What are centrifugal pumps? - ANSWER-Pumps using centrifugal force to
convey liquid.
What is 100 degrees Celsius in Fahrenheit? - ANSWER-212 degrees Fahrenheit
If 17.32v are applied across a resistance of 50 ohms, how much power is
expended in the resistor? - ANSWER-6 Watts
Volt = amp x ohms
17.32 = amp x 50
17.32/50 = 0.34 = amps
Watts = volts x amps
Watts = 17.32 x 0.34
Watts = 6
,A standard steel plate is 4ft x 8ft x 1 inch thick. If steel weighs 490 lbs/ft^3,
what is the total weight of this plate? - ANSWER-1/12 = 0.083
4 x 8 x 0.083 = 2.656
2.656 x 490 = 1,301.44 lbs
What is the volume in cubic feet of carbon media that is 6 feet thick in a
clarifier that has a 50 foot diameter and is 20 feet deep? Round the answer to the
nearest cubic foot - ANSWER-0.785 x 50 x 50 x 6 = 11,775 ft^3
A 150 watt, 120 volt lamp burns constantly for 8 hours at a rated voltage. What
is the energy used in watts/hour? - ANSWER-1,200 Watts/hour
The property of an electrical circuit restricts the flow of current and ....... -
ANSWER-resistance
What can burn the insulation on supply connections at the motor starter? -
ANSWER-The connections are loose or have poor contacts
Where do you start troubleshooting when an electric motor fails to operate? -
ANSWER-At the power source
What does NEC stand for? - ANSWER-National Electrical Code
What is a pipe union typically used for? - ANSWER-to connect pipe
What is a Cipolletti weir? - ANSWER-A trapezoidal sharp-crested weir for
measurement of liquid discharge in open channels
, What is a composite sample? - ANSWER-A collection of individual samples
obtained at regular intervals, based either on flow or time. The individual
samples are combined proportionately
What are some characteristics of a confined space which needs a permit for
entry? - ANSWER-A space, which has limited openings for entry or exit, has
unfavorable ventilation, and which could contain or produce dangerous air
contaminants, or create an atmosphere of oxygen deprivation, and is not
intended for continuous employee occupancy.
What is a Doppler Flow Meter? - ANSWER-A device that measures the
velocity of a liquid by measuring the change in frequency between a wave
source and a meter
How many gallons are in a rectangular tank that is 150' long, 42' wide, and 18.5'
deep? - ANSWER-871,974 gal
A 38 tooth gear at 360rpm is driving a gear at 144 rpm, how many teeth are on
the gear that is turning 144rpm? - ANSWER-95 teeth
A trench 18" wide has sewage flowing at a depth of 2'. If the velocity of the
sewage is 1.5 feet per second, what is the flow in gallons per minute? -
ANSWER-18/12 = 1.5'
1.5' x 2' x 1.5'/sec = 4.5ft^3/s
4.5ft^3/s x 60 sec = 270ft^3/min
270ft^3/min x 7.48gal = 2,019.60 gal/min
What kind of valve is designed to rotate 90 degrees? - ANSWER-1/4 turn such
as a ball valve or a butterfly valve
CWEA CERTIFICATION EXAM STUDY 2025
WITH REAL QUESTIONS AND WELL
VERIFIED ANSWERS || GUARANTEED PASS ||
ALREADY GRADED A+ || LATESTT UPDATE
What is the definition of atomic weight? - ANSWER-The sum of the number of
protons and the number of neutrons in the nucleus of an atom. Atomic weights
of elements are found on the periodic table.
What are centrifugal pumps? - ANSWER-Pumps using centrifugal force to
convey liquid.
What is 100 degrees Celsius in Fahrenheit? - ANSWER-212 degrees Fahrenheit
If 17.32v are applied across a resistance of 50 ohms, how much power is
expended in the resistor? - ANSWER-6 Watts
Volt = amp x ohms
17.32 = amp x 50
17.32/50 = 0.34 = amps
Watts = volts x amps
Watts = 17.32 x 0.34
Watts = 6
,A standard steel plate is 4ft x 8ft x 1 inch thick. If steel weighs 490 lbs/ft^3,
what is the total weight of this plate? - ANSWER-1/12 = 0.083
4 x 8 x 0.083 = 2.656
2.656 x 490 = 1,301.44 lbs
What is the volume in cubic feet of carbon media that is 6 feet thick in a
clarifier that has a 50 foot diameter and is 20 feet deep? Round the answer to the
nearest cubic foot - ANSWER-0.785 x 50 x 50 x 6 = 11,775 ft^3
A 150 watt, 120 volt lamp burns constantly for 8 hours at a rated voltage. What
is the energy used in watts/hour? - ANSWER-1,200 Watts/hour
The property of an electrical circuit restricts the flow of current and ....... -
ANSWER-resistance
What can burn the insulation on supply connections at the motor starter? -
ANSWER-The connections are loose or have poor contacts
Where do you start troubleshooting when an electric motor fails to operate? -
ANSWER-At the power source
What does NEC stand for? - ANSWER-National Electrical Code
What is a pipe union typically used for? - ANSWER-to connect pipe
What is a Cipolletti weir? - ANSWER-A trapezoidal sharp-crested weir for
measurement of liquid discharge in open channels
, What is a composite sample? - ANSWER-A collection of individual samples
obtained at regular intervals, based either on flow or time. The individual
samples are combined proportionately
What are some characteristics of a confined space which needs a permit for
entry? - ANSWER-A space, which has limited openings for entry or exit, has
unfavorable ventilation, and which could contain or produce dangerous air
contaminants, or create an atmosphere of oxygen deprivation, and is not
intended for continuous employee occupancy.
What is a Doppler Flow Meter? - ANSWER-A device that measures the
velocity of a liquid by measuring the change in frequency between a wave
source and a meter
How many gallons are in a rectangular tank that is 150' long, 42' wide, and 18.5'
deep? - ANSWER-871,974 gal
A 38 tooth gear at 360rpm is driving a gear at 144 rpm, how many teeth are on
the gear that is turning 144rpm? - ANSWER-95 teeth
A trench 18" wide has sewage flowing at a depth of 2'. If the velocity of the
sewage is 1.5 feet per second, what is the flow in gallons per minute? -
ANSWER-18/12 = 1.5'
1.5' x 2' x 1.5'/sec = 4.5ft^3/s
4.5ft^3/s x 60 sec = 270ft^3/min
270ft^3/min x 7.48gal = 2,019.60 gal/min
What kind of valve is designed to rotate 90 degrees? - ANSWER-1/4 turn such
as a ball valve or a butterfly valve
