# PE practice questions and answers

A tube that is 10 feet long and 2 feet in diameter is placed in an air
stream. The flow of the air is at a speed of 15 ft/s and is
perpendicular to the long axis of the tube. If the coefficient of drag
is 1.3 and the density of air is 0.075 lbm/ft^{3} What is the drag on the cylinder?

(A) 150 lbf

(B) 200 lbf

(C) 320 lbf

(D) 220 lbf

The Correct Answer

**Pass：**Next

Explanation

The Principles and Practice of Engineering exam is the examination required for one to become a Professional Engineer (PE) in the United States. It is the second exam required, coming after the Fundamentals of Engineering exam.