Please wait... 1. In a 480V wye system, what is the typical voltage from phase to neutral?120 volts277 volts347 volts240 volts 2. What is influent?Sludge Incoming wastewater Treated water Gas 3. Calculate SRT: Aeration tank volume = 1,000 m³, MLSS = 3,000 mg/L, sludge wasted per day = 150 kg/day.10 days 25 days 15 days 20 days 4. What does “LOTO” stand for?Line Output Testing OrderLoad Operated Transfer OptionLow Output Terminal OperationLockout Tagout 5. What does impedance primarily affect during a fault condition?Fault current magnitudeGround rod depthConduit fill percentageWire insulation color 6. When is an expansion tank required?System pressure drops below normalClosed SystemAir needs to be removed?Additional water storage needed 7. What is the primary function of a secondary clarifier?Biological degradation Chemical addition Solid-liquid separation Disinfection 8. What is the purpose of a P-Trap?Blocks sewer gasesTo speed up drainageFilter debris from wastewaterIncrease water Pressure 9. Which NFPA standard primarily covers electrical workplace safety?NFPA 72NFPA 70ENFPA 101NFPA 13 10. What is one common voltage for residential split-phase systems?120/240 volts208/347 volts600/347 volts277/480 volts Loading...
