TCEQ Class B Surface Water B test material -Exam with Questions and Verified Correct Answers| Latest Update | 2024|2025

TCEQ Class B Surface Water B test material -Exam with Questions and Verified Correct Answers| Latest Update | 2024|2025 What is the most important factor affecting the useful life of service lines? - Correct Answer It is the ability of the material to resist internal and external corrosion When does Suction Head exist? - Correct Answer Suction head exists when the source of supply is above the centerline of the pump. What is Net positive Suction Head (NPSH) - Correct Answer NPSH is the pressure under which water enters the eye of the impeller in a centrifugal pump. Insufficient NPSH is the main cause of pump cavitation Explain and expand on Chlorine Dioxide (what it reacts with, oxidizes, etc) - Correct Answer Chlorine Dioxide is a gas used in small quantities to disinfect water. It does not react with organics to form THMs and HAAs. It oxidizes phenols, manganese, iron, sulfurous and organic compounds which aids in the removal of tastes and odors. It is a very effective bactericide and a superior virocide. It dies not combine with ammonia. Chlorine Dioxide MRDL is .8 mg/L and monitoring procedures are the same as for chlorine. The Chlorite MCL is .q mg/L and must be monitored daily.