SDI Chapter three: Scuba Equipment Questions and Answers with complete solution

How do you know if a mask fits correctly? - ️️First, you need to press the mask against your face without using the strap Then make sure there's no hair under the skirt of the mask while inhaling slightly. If the mask tightens against your face and doesn't fall off, it's a good fit. Describe the function of a scuba regulator first stage and second stage - ️️The first stage attaches to tank and reduces the high pressure air to an intermediate pressure for breathing (attaches to the tank valve). The second stage delivers air at ambient pressure directly to the diver(has the mouthpiece and purge button) Name at least one visual and one audible rescue signaling device - ️️Your safety sausage, or a whistle/horn. What extra attire can enhance a diver's warmth when worn with a wet or dry suit? - ️️Some extra attire diver's can use are boots, hoods, and gloves. Name two functions of wet suit boots. - ️️Two functions are protection and for warmth. Define maximum dive depth. - ️️It is the deepest point reached during a dive Define no-stop time - ️️It is the amount of time remaining at any point during a dive before incurring a mandatory decompression stop. What are two ways a PDC may alert a diver that he or she are ascending too fast? - ️️The PDC does visual alarms and audible alarms to warn drivers. How do you determine the time limit for a repetitive dive from a PDC? - ️️By using the Surface Interval Time feature on your PDC. What are two types of weight systems? - ️️The weight belt and the weightintegrated BCD.What are the two types of dive flags that are commonly flown from a dive boat? - ️️The Diver-down flag which is red & white and the international flag which is blue & white. A cylinder should be visually inspected at least _____________________ a year and hydrostatically tested every ________________ years, in the Unite States. - ️️Once and every five years.