Help preparing for exam

[Rooster59]

It's a multiple choice test. Even if you have very small errors in your calculations or don't calculate temperature, the answers other than the right one are pretty wrong.

 

[Merryoceaner]

is this for NAUI divemaster?

-Z

Yes

 

[Zef]

Yes

I remember these or similar questions from a university SCUBA course I took back in 1995 that included NAUI certification.

Good luck on your DM exam.

-Z

 

[wnissen]

= 2.10l (which is close, but not precisely one of the accepted answers... hmm)


--> Ok, what did I do wrong here? I was expecting to get pretty much spot-on, unless the question was written in imperial and the conversions to metric are "iffy".

I ran through each of the listed "measurements", and they are correct and rounded correctly to the given number of significant figures. Not sure what's going on.

 

[Protondecay123]

I ran through each of the listed "measurements", and they are correct and rounded correctly to the given number of significant figures. Not sure what's going on.

I've ran into this before with the explanation that "if you can't find the exact answer that you have, pick the answer closest to your answer." I really do NOT like that type of question. As you point out, there is a standard accepted way of rounding digits, etc.

 

[TMHeimer]

These were also the type of questions on the PADI DM exams before they change things around 2010. I wonder if any of these type of problems are still included, as I heard the "new" course lacks a lot of the old physics.

 

[Zef]

These were also the type of questions on the PADI DM exams before they change things around 2010. I wonder if any of these type of problems are still included, as I heard the "new" course lacks a lot of the old physics.

I can sadly assure you the current PADI DM exam does not even approach the level that these questions are at.

-Z

 

[Merryoceaner]

I remember these or similar questions from a university SCUBA course I took back in 1995 that included NAUI certification.

Good luck on your DM exam.

-Z

Thanks so much! I feel alot better! I just needed a good refresher! It's been while since I looked at the material

 

[TMHeimer]

I thought these types of questions were part of the NAUI Master Scuba Diver course, which is a pre-requisite for NAUI DM course. Is that incorrect?

 

[yle]

I may be stupid but I did a quick calculation on #44. I said to myself, "Self there is a 70' difference. That's about 2 atm difference. One atmosphere would half it to 2 liters. Another atmosphere would half it again to 1 liter. Allow a difference for the temp change. so guess answer a. Worst case, it's answer b." Then I said to myself, "Self, if you have to solve this problem before you can go have fun diving, then you need to find a new hobby."

Cheers -

No... each additional atmosphere does not cut the previous volume in half.