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Practise problems

PE Exam Practice Problem: Water Resources Wetted Perimeter

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In this Pass the PE Exam post, I am going to solve a Wetted Perimeter problem that is part of the Water Resources section that you will encounter on the PE Exam. The term wetted perimeter is common in civil engineering, environmental engineering, hydrology, geomorphology, and heat transfer applications; it is associated with the hydraulic diameter or hydraulic radius. The wetted perimeter is defined as the length of the line representing the interface between a fluid and a channel. 

Here’s The Wetted Perimeter Problem:

Wetted Perimeter

Here’s The Solution: 

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Angle of Rotation Problem (Practice and Solution)

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Angle of rotation problems can come up in several NCEES FE Exams: Civil, Mechanical, and Other Disciplines. In mathematics, the angle of rotation is a measurement of the amount, of namely angle, that a figure is rotated about a fixed point, often the center of a circle. 

A clockwise rotation is considered a negative rotation, so that, for instance, a rotation of 310 degrees (counter clockwise) can also be called a rotation of negative 50° (since 310 degrees + 50 degrees = 360 degrees, a full rotation ( or turn)). 

A counter clockwise rotation of more than one complete turn is normally measured modjulo 360 degrees, meaning that 360 degrees is subtracted off as many times as possible to leave a non-negative measurement less than 360 degrees. 

Before I move ahead, let me remind you that the FE EXAM or fundamentals of engineering – is the first step to getting your professional engineering license, and through the videos on this channel, including this one, you will learn not only how to properly prepare for the exam, but how to ensure you PASS THE FE EXAM! 

 Subscribe to our YouTube channel here, as our weekly videos will help you Pass the FE Exam. Leave your FE questions in the comments below and we will answer them in future videos.

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