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Yes that is correct. But if you just recognize that with four phases you have 90 degree separation you just could use pythagoras theorem. With both sides of a right triangle equal to each other the hypotenuse will be sqrt[2] larger than one side.  Assume each voltage vector is magnitude of 1 we...

This is incorrect.

Note- This problem has been solved. Reward has doubled!!!!! I will give the first person to solve this problem my complete set of books for free OR can get $100 cash. See link for complete details...

See IEEE standard 115 "IEEE Guide for Test Procedures for Synchronous Machines" year 2009 section 10.6.1.2. Go to my website and email me if you want further information that I am unable to provide here.

My first thought was it looked like my reference handbook 😁 Seriously though, it will be interesting to see the quality of the questions. If they change at all. I took a look at the new mechanical sample test and this is what they say in the description: My hunch tells me the problems will be...

I get many questions about Question 74 of Volume II.  I have posted pictures of an actual core winding for a large single phase transformer. http://cramforthepe.com/index.php/2020/06/19/actual-winding-of-real-power-transformer/

What is the exam number and question number you are referencing?

No problem.Probably should have pointed out in the above- notice how the sin wave oscillates around 90°. Also this is the "classic approach" to solving this problem. Now its all done via state space representation. Someone may have a simpler explanation for this though. I would be curious to see...

This is a complicated question but I will attempt to be as detailed as possible without over killing it. First, let us try to understand H and what it actual means. If we have a mass of inertia J, rotating at a speed of ωr itstores a kinetic energy Ws=0.5* ωr2/S and its momentum is m0=J ωr ...

If you worked in the public sector (or utility) you are at a disadvantage. Not only in taking the PE but compared to other engineers that got the correct experience. My advise to all engineers starting out in their career is not to start in the public sector. The good news is I bet you are not...

For volume IV that is correct. Some will just be "give answer to nearest tenth". Others will be "Select all that apply". Others will be the standard A,B,C,D one choice.

Cram For the Pe Sample Test IV is completed! http://cramforthepe.com/index.php/2020/04/26/fourth-test-volume-ready-for-purchase-on-amazon/ This volume includes alternate item type (AIT) questions. According to NCEES, this October 2020 PE test will be the last of the pencil and paper standard...

It is as Chattaneer PE has stated. I can see why you did what you did though. Perhaps there is a better wording for this. Any suggestions?

Blackburn touches it in his book. However, I do not like the way he describes it. I think my explanation and pictures makes it easier to understand. But I will let you guys decide on that.

Funny story! I do not believe I have ever taken a test that did not penalize you for getting the wrong answer. But I guess that is why I do not understand it. Just answer one question and get a 100%. They should explain further on this point. Anyway in real life and your career you have to...

There is the field current limit. But the question is asking about stability. If you ever look at the generator capibily curve (GCC) you will see the Steady-State Stability Limit (SSSL). This lies in the under-excitation plane. So as you increase field current you get further away from this...

The answer to this question has been published here: http://cramforthepe.com/index.php/2020/02/08/distance-relay-problem-2/

Using vectors is below I just assumed each transformer had a 1:1 ratio to make it easier. I will add to the solution of later book to make it more clear.

Interesting. I did not know about this. So they will probably follow the mechanical and only allow their book in the exam. I will change to my questions to Follow the format of the "alternative questions". It looks like there will still be 80 questions. I don't understand when they say you won't...

I plan to keep the books in print. All I could really do is rely on feedback from people who take the test and tell me how it compares. This fourth volume will probably be my last though.  All I know about is the FE transition. I never heard of any PE test yet going this way. My hunch is they...