Now that actually READ what exam you are taking.....slightly different advice...lol
The exam is two parts in Texas now for the Master Electrician, one part knowledge and one part calculations. You have to pass both to obtain your Masters license. However, for the Master Sign Electrician it is still only one exam and it is predominantly knowledge based.
There are a few basic raceway fill calculation questions that are not very hard but think through them closely before you rush to answer. There are also a few ohms law questions on the sign master exam to be aware of as well.
Again the calculations are not tough on this exam. Just also watch out for the low hanging fruit on understanding the 125% for continuous loads (as I am sure you already know) as well as when only 100% applies in situations where it is not a continuous load as some of those are thrown in to shake you up a bit.
There are a few questions on box fill which are on the master sign exam but very few....just take it slow and use the dry erase pad to work it out. If you are a little rusty on box fill just familiarize yourself with it again and you should be fine.
If I can think of any more I will update for you. The key is you have plenty of time to work them out......just relax as most of the calculations are not too deep in more than 2-3 steps.
I do remember (and probably helped write it..who knows) a few questions using 250.102(C)(1) for sizing bonding jumpers so brush up on that table as well as there will be some sizing the EGC (simple enough) on the exam so be ready for those. My advice on a single exam (unlike the Texas Masters) like the sign master, review it in 3 waves....make what you know without a doubt, then when you get to a tough one mark it and move on with the next. Skip all calculations unless they are easy and mark them for later. The concept it to build you some extra time to work on those calculations but in the end do well on the knowledge portion and you should be fine.
There are a few basic motor questions on the exam...just be aware of 430.52 and how it is used and watch for the questions where they slide in AL Conductors into the question since we all know that on the Texas exam the default is always CU unless expressed otherwise. Yes, you will get a few questions that try to bring AL into the question.
If I think of some more I will post them. Just did a video shoot at Encore all day and the mind is mush at the moment...