Kaplan Electrical PE Review, Prob 7.5, pg 146

[cabby]

Is anyone working the Kaplan Review? I do not understand Prob 7.5, pg146. I do not understand how they constructed their Karnaugh map in the solution.

thanks,

cabby

 

[wilheldp_PE]

That problem is a typo. The question states that "a second warning device will come ON if all three vibration sensors do not agree", but when you look at the solution, it tells you to "form the function when A, B, and C agree".

I apparently had the same issue with that problem when I was studying because I have the "not" crossed out in the problem statement on page 146.

 

[cabby]

Thank you.

I will not worry about that one any longer.

thanks,

 

[wilheldp_PE]

No problem...that's what we're here for.

That problem actually works like the solution shows if you remove the "not" from the problem statement, so it is still mildly useful study material.