Happy Holidays and Merry Christmas to everyone. Just finished working through Power House Maintenance, tools and equipment with my class 4 group. Interesting in how many individuals have NOT used tools (as a kid, they have not taken stuff apart, and they have not built stuff). So, we should not take for granted that everyone knows that there are different files, or how to use a hacksaw. But, we have had tonnes of fun this fall. Be safe and enjoy Family & Friends................ Brian

As many of you know, PowerEngineering101.com provides exam preparation services. Currently, we are updating existing content with solutions and multiple-choice variations. As we build a road map for the direction of new material, I wanted to reach out to everyone in our community to see where our time would be best spent. Please see the list of potential new preparation courses/practice exams and vote on the additional education you think would be most beneficial. If we missed any certifications on this list, let us know in the comment section. So which course/practice exam should we build next?

Hi there. For operator B practice exam I have such question 1. Why group A? 2. About cylinder volume: how many time and ways did I try I never got any result similar to answers just choused random. If answer is not correct it can confuse more than help Thanks