Dive Master NAUI questions with correct answers

What pressure will a scuba cylinder with a rated working pressure of 3000 psig (207 bar), be exposed to during a hydrostatic test? CORRECT ANSWER 5000 psig (345 bar) Which principle represents one basis for the hydrostatic testing of scuba cylinders? CORRECT ANSWER Permanent expansion If a visual cylinder inspection reveals corrosion inside a scuba cylinder, it may require cleaning by a process called: CORRECT ANSWER Tumbling Which of the following is considered proper care of a scuba cylinder? CORRECT ANSWER Preventing moisture from entering the cylinder. Two cylinder valves in common use today are: CORRECT ANSWER The K-valve and DIN valve. Which valve is an example of a special scuba valve that is required for certain types of specialty diving such as deep diving with a single cylinder? CORRECT ANSWER Y valve Which internal valve designs are available in the first stage of scuba regulators? CORRECT ANSWER Piston; Diaphragm Which valve is unaffected by cylinder air pressure with regard to the force needed to operate the valve? CORRECT ANSWER Balanced Which regulator second stage design us