Verified Multiple Choice and Conceptual Actual Exam
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1. What are volts? - ANSWER A unit of electric potential
2. What is the equation for volts? - ANSWER Volts = watts/amps
3. What are amps? - ANSWER A unit of electric current
4. How do you calculate amps? - ANSWER Amps = watts / volts
5. What are watts? - ANSWER A watt is a unit of power
6. How do you calculate watts? - ANSWER Watts = amps * volts
7. What are ohms? - ANSWER A measurement of resistance between two
points
8. How do you calculate ohms? - ANSWER Ohms (R) = volts / amps
,9. What does pneumatic mean? - ANSWER Containing or operated by gas
or air under pressure
10.The specific gravities of gasoline and other volatile solvents are typically
__________________ than water - ANSWER less than, meaning they
will float
11.How many gallons are in 1 ft^3? - ANSWER 7.48
12.If a gallon of gasoline weighs 7 lbs, what would be the weight of a 350-
gallon tank full of gasoline? - ANSWER 350 gal * 7lbs(per 1gal) = 2,450
lbs
13.What is 500 gpm in MGD? - ANSWER 500gal/1 min * 1440 min =
720,000 gal per day / 1,000,000 = 0.72 MGD
14.A chemical feed pump is set to deliver 50 GPD. What is the calibrated
chemical feed in gpm? - ANSWER 50gal/1 day divided by 24hours =
2.083gal/hour divided by 60 minutes = 0.035 gpm
15.How many Liters are there in 1 gallon? - ANSWER 3.785 Liters
16.A cyanide destruction process is designed to treat 30 lbs of cyanide per 24
hour operational day. How many lbs of cyanide can be treated during an 8
hour shift? - ANSWER 30 lbs/1 day divided by 24 hours = 1.25lbs/hour
multiplied by 8 hours (1 shift) = 10lbs cyanide per shift
,17.What is the volume of a slab of concrete that is 150ft long, 200ft wide, and
3in thick? - ANSWER 3in / 12 in = 0.25ft
150ft * 200ft *0.25ft = 7,500ft^3
18.How many cubic feet are in 1 cubit yard? - ANSWER 27 cubic feet (ft^3)
= 1 cubic yd (yd^3)
19.What is the area of a manhole that measures 40 inches in diameter?
Answer must be in ft^2 - ANSWER 40in / 12in = 3.3ft
0.785 * 3.3 *3.3 = 8.71ft^2
20.CBT Demo Website - ANSWER www.cwea.org/cbt
21.What is 1 cubic foot in cubic inches (ft^3)? - ANSWER 1,728 cubic
inches
22.How many gallons is one cubic foot (ft^3)? - ANSWER 7.48gal
23.How many pounds (lbs) is one cubic foot (ft^3) of water? - ANSWER
62.43 lbs
24.1 gal of water weighs how much in lbs? - ANSWER 8.34 lbs
, 25. What is 1 ft^3/sec in gal/min? - ANSWER 448.8 gal/min
26. What is 1 MGD in Gal/min? - ANSWER 694 gal/min
27. What is 1 horsepower equal to in foot-pounds/minute? - ANSWER
33,000 foot-pounds/minute
28. 1 psi = ________ feet of water - ANSWER 2.31 feet of water
29. 1 kilowatt equals how many watts? - ANSWER 1000 watts
30. What is 1 horsepower in watts? - ANSWER 746 watts
What does BTU mean? - ANSWER British Thermal Unit, a measure of thermal
heat
What is 1 horsepower equal to in BTU/minute? - ANSWER 42.45
What is 1 MGD in cubic feet (ft^3) per second? - ANSWER 1.55 ft^3/sec
What is 1 BTU equal to in foot-pounds? - ANSWER 778 foot-pounds