SEWAGE TREATMENT WORKER PRACTICE TEST UPDATED QUESTIONS AND
ANSWERS
The scale on the drawing is 1/8"=1. What is the actual length of a line that measures 2" 1/4' on the
drawing? - CORRECT ANSWER✅✅6 ft? 18 ft?
Which of the following measure the specific gravity of the electrolyte of a wet cell battery? - CORRECT
ANSWER✅✅Hydrometer
A possible cause for an air conditioner compressor to run continuously is a - CORRECT
ANSWER✅✅Defective low pressure control switch? Shortage of refrigerant?
Threads are cut in a rod by rotating the die stick 1/4 turn back for each 1/2 forward turn, this is done in
order to? - CORRECT ANSWER✅✅Break the Chips
Three pumps are connected to a water tank, each pump pumps a rate of A=150 GPH B=250 GPH C=500
GPH, what is the average pumping rate of the pumps in gallons per hour? - CORRECT ANSWER✅✅300
If the capacity of the water tank is 14,250 gallons, how many hours will it take to fill the tank using only
pumps B=250 GPH and C=500 GPH - CORRECT ANSWER✅✅19
What type of power tool uses the blades shown below? Diagram - CORRECT ANSWER✅✅Reciprocating
Saw
What is the length of pipe needed to make four pieces measuring 18 3/4", 8 1/8", 16 5/16", 24 1/2"? -
CORRECT ANSWER✅✅67 11/16
The one of the following that is not on a glove valve is? - CORRECT ANSWER✅✅Wedge
An elbow having an outside thread on one end and inside thread on the other end is called - CORRECT
ANSWER✅✅Street Elbow
, When drilling cotter pin holes in a piece of round stock, the piece should be held with a - CORRECT
ANSWER✅✅V Block
The volume of the tank in cubic feet is D=10 ft, H=40 ft? - CORRECT ANSWER✅✅3,142 (3.14 x 5 squares
x 40)
How many gallons of paint will be needed to paint the inside of the above tank, (Assume that one gallon
of paint cover 100 sq. feet) Diameter is 10, Height is 40 - CORRECT ANSWER✅✅12?14? How
The gauges in the above drawing represents the current reading of water meter in cubic meters. If the
previous reading was 1932, how much water has been used? Diagram is showing 9159 - CORRECT
ANSWER✅✅7227
Which of the following power tools should be used for driving and removing nuts, bolts, studs, and
screws? - CORRECT ANSWER✅✅Air impact gun
Of the following, the main reason for using lubricant is to - CORRECT ANSWER✅✅Reduce Friction
The order to prepare concrete using a 1:2:4 volumetric ratio, how much gravel and sand should be
mixed with 22 bags of cement? - CORRECT ANSWER✅✅44 cu. ft. and 88 cu. ft. of gravel
The SAE numbers of an oil refer to its - CORRECT ANSWER✅✅Viscosity
The least important factor when determining a suitable viscosity for a bearing lube is the - CORRECT
ANSWER✅✅Location of bearing? Operating speed?
Which of the following tools should be used when finishing a surface? - CORRECT ANSWER✅✅Orbital
Sander
What is the capacity of this tank, 20'wide, 40' long, and 10' high - CORRECT ANSWER✅✅8000 (multiply
them all)
ANSWERS
The scale on the drawing is 1/8"=1. What is the actual length of a line that measures 2" 1/4' on the
drawing? - CORRECT ANSWER✅✅6 ft? 18 ft?
Which of the following measure the specific gravity of the electrolyte of a wet cell battery? - CORRECT
ANSWER✅✅Hydrometer
A possible cause for an air conditioner compressor to run continuously is a - CORRECT
ANSWER✅✅Defective low pressure control switch? Shortage of refrigerant?
Threads are cut in a rod by rotating the die stick 1/4 turn back for each 1/2 forward turn, this is done in
order to? - CORRECT ANSWER✅✅Break the Chips
Three pumps are connected to a water tank, each pump pumps a rate of A=150 GPH B=250 GPH C=500
GPH, what is the average pumping rate of the pumps in gallons per hour? - CORRECT ANSWER✅✅300
If the capacity of the water tank is 14,250 gallons, how many hours will it take to fill the tank using only
pumps B=250 GPH and C=500 GPH - CORRECT ANSWER✅✅19
What type of power tool uses the blades shown below? Diagram - CORRECT ANSWER✅✅Reciprocating
Saw
What is the length of pipe needed to make four pieces measuring 18 3/4", 8 1/8", 16 5/16", 24 1/2"? -
CORRECT ANSWER✅✅67 11/16
The one of the following that is not on a glove valve is? - CORRECT ANSWER✅✅Wedge
An elbow having an outside thread on one end and inside thread on the other end is called - CORRECT
ANSWER✅✅Street Elbow
, When drilling cotter pin holes in a piece of round stock, the piece should be held with a - CORRECT
ANSWER✅✅V Block
The volume of the tank in cubic feet is D=10 ft, H=40 ft? - CORRECT ANSWER✅✅3,142 (3.14 x 5 squares
x 40)
How many gallons of paint will be needed to paint the inside of the above tank, (Assume that one gallon
of paint cover 100 sq. feet) Diameter is 10, Height is 40 - CORRECT ANSWER✅✅12?14? How
The gauges in the above drawing represents the current reading of water meter in cubic meters. If the
previous reading was 1932, how much water has been used? Diagram is showing 9159 - CORRECT
ANSWER✅✅7227
Which of the following power tools should be used for driving and removing nuts, bolts, studs, and
screws? - CORRECT ANSWER✅✅Air impact gun
Of the following, the main reason for using lubricant is to - CORRECT ANSWER✅✅Reduce Friction
The order to prepare concrete using a 1:2:4 volumetric ratio, how much gravel and sand should be
mixed with 22 bags of cement? - CORRECT ANSWER✅✅44 cu. ft. and 88 cu. ft. of gravel
The SAE numbers of an oil refer to its - CORRECT ANSWER✅✅Viscosity
The least important factor when determining a suitable viscosity for a bearing lube is the - CORRECT
ANSWER✅✅Location of bearing? Operating speed?
Which of the following tools should be used when finishing a surface? - CORRECT ANSWER✅✅Orbital
Sander
What is the capacity of this tank, 20'wide, 40' long, and 10' high - CORRECT ANSWER✅✅8000 (multiply
them all)
