ABYC DIESEL ENGINE CERTIFICATION EXAM FINAL REVIEW UPDATED AND VERIFIED QUESTIONS AND ANSWERS 100% A+ GRADED

ABYC DIESEL ENGINE CERTIFICATION EXAM FINAL REVIEW UPDATED AND VERIFIED QUESTIONS AND ANSWERS 100% A+ GRADED E - CORRECT ANSWER-Ball valves may be sealed to through hull fittings with: A. 5200 B. SikaFlex C. Teflon D. All the above E. None of the above B - CORRECT ANSWER-Tubes are measured by: A. ID B. OD C. nominal size C - CORRECT ANSWER-pipes may not be connected by: A. Welding B. Threaded fittings C. Compression fittings D. Glue C - CORRECT ANSWER-Tech A says Seacocks must be readily accessible. Tech B say its ok to have them within 12" of the engine. who is correct? A. Tech A B. Tech B C. Both D. neither D - CORRECT ANSWER-Tech A says that it is all right to connect an auxiliary line to the potable water pump as long as there is a siphon break. Technician B says you must have a lockable Y valve to prevent cross contamination. who is right? A. Tech A B. Tech B C. Both D. Neither D - CORRECT ANSWER-A bildge pump discharge line must be: A. equipped with a check valve to prevent back flow and nuisance cycling B. Equipped with a properly installed seacock C. No more than 30' long D. non of the above D - CORRECT ANSWER-ball valves below the waterline must be: A. ABYC approved B. ABYC Certified C. ABYC endorsed D. none of the above D - CORRECT ANSWER-potable water systems must discharge A. into a sump B. Overboard C. Into the grey water tank D. any of the above OD ID - CORRECT ANSWER-Tubes are measured in _________ and hoses are measured in _________ A - CORRECT ANSWER-Which of the following components may need to be by-passed for the purpose of decommissioning? A. Tanks, filters and water heaters B. Strainers, tanks and pumps C. Fixtures and lines D. Dockside water connections B - CORRECT ANSWER-Which of the following agencies must be referenced when selecting materials for use in a portable water system? A. DOT B. FDA C. USCG D. UL B - CORRECT ANSWER-According to ABYC, a biologically contaminated potable- water system should be disinfected with a mixture of chlorine and have a strength of at least: A. 1,00ppm B. 100ppm C. 10ppm D. 1 ppm B - CORRECT ANSWER-Contamination of the potable-water system with ethylene glycol may be explained by: A. Excessive pump cycling B. Leaking heat exchanger on a water heater C. Nuisance tripping of pump circuit breaker D. Close proximity of engine to water heater A - CORRECT ANSWER-With a Type 1 sanitation system, waste is: A. Treated and discharged B. Treated and held C. Stored in a holding tank D. Discharged without treatment A - CORRECT ANSWER-A head located below the vessels's dynamic waterline using RAW water for flushing requires a: A. Vented loop on its intake B. Check valve on its intake C. Strainer on its intake D. Check valve on its discharge A - CORRECT ANSWER-The result of an obstructed holding tank even during pump out may be: A. A collapsed holding tank B. Raw water flooding C. An explosion D. Tank contamination