Wastewater Class 4 Exam Virginia 2026 A+ Score Guaranteed

In an electrical circuit, the grounding wire is indicated by which color? - ANS- Green According to the Ohms Law, which electrical unit measures pressure? - ANS- Volts According to the Ohms Law, which electrical unit measures resistance? - ANS- Ohms According to the Ohms Law, which electrical unit measures current? - ANS- Amps How do you convert cubic feet to gallons? - ANS- Multiply by 7.48 How do you convert gallons to pounds? - ANS- Multiply by 8.34 Calculate the SVI of your aeration basin when your 30-minute settleable sample is 360 mL/L and your average mixed liquor suspended solids concentration is 4000 mg/L. - ANS- 90 Solution: 360 x 1,000 ------------- = 90 4,000 What is the most widely used dichlorination agent in a conventional chlorine gas plant? - ANS- Sulfur Dioxide What is the most prominent concern in failing to remove grit from the wastewater? - ANS- Excessive wear and damage on mechanical equipment What is the chemical formula for Sulfuric Acid? - ANS- H2SO4 What is the ideal velocity in a grit channel, in feet per second? - ANS- 1 fps Conventional pump packing should be: - ANS- Tightened down to a drip In a primary clarifier, the expected performance for removing settleable solids is 90-95% removal. What about the removal of suspended solids? - ANS- 50% ....