combines several gauges in one package D. is the oldest of the instrument carrying options B. False Answer: A 10.Wearing gauges on the wrist: A. False Answer: B 9.Aluminum cylinders typically have thicker walls than steel tanks. downstream valve Answer: A 8.One corrosive element that might form if water gets inside a steel tank is aluminum oxide. downstream/pilot Answer: C 7.When diving in extremely cold water, a regulator that has a(n) _ may be protected from freezing up.

Answer: D 6.The first stage of a modern scuba regulator will most likely have either a(n) _ or _valve. is better able to supply the needs of two divers breathing simultaneously from the regulator. is more capable of supplying air to accessories, such as low pressure inflators. provides greater airflow and breathes easier at greater depths. False Answer: B 5.When a scuba regulator's first stage is balanced it: A. all of the above Answer: D 4.An upstream valve is one that may open with or against the flow of air, depending on the design. it is left for more than two years with zero pressure D. it requires tumbling or sandblasting to remove corrosion C. none of the above Answer: A 3.You might hydrostatically test a cylinder before its due date if: A. a valve that takes a yoke screw design regulator D. Obviously the tank will lose air fast, so the diver must make an immediate ascent or take air provided from another air source. It will fail in a safe manner opening of air and continues to provide air until the tank is empty. None of the above Answer: D Explanation: Modern regulators are designed to free flow during a malfunction, which gives the regulator a fail-safe design.

all known instances of failure have not caused an accident D. the regulator will shut down if a diver exceeds safe limits C. the regulator is so reliable, it is nearly impossible that it can fail B. 1.'Fail safe' in reference to modern scuba regulator means: A. questions and answers in the first attempt. Pass Pass PADI INSTRUCTOR EXAM PADI INSTRUCTOR EXAM With Real Questions With Real Questions Free download PADI INSTRUCTOR EXAM real questions P Pass ass PADI INSTRUCTOR EXAM PADI INSTRUCTOR EXAM with with passscuba passscuba PADI PADI INSTRUCTOR INSTRUCTOR questions and answers in the first attempt.

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