Hi there!
Thanks for your interest in our free practice exams. The level of difficulty of the problems in these exams is consistent with what you will see on the NCEES Principles and Practice of Engineering Examination. Our practice exam is an 8-hour open-book exam. It contains 40 multiple-choice questions for a 4-hour morning session, and 40 multiple-choice questions for a subsequent 4-hour afternoon session.  Our exam is in accordance with the April 2017 examinations.  
NOTE: The Thermal and Fluids Systems practice exam was written before the move to computer-based examination. Therefore, it contains a few problems that cannot be solved with the information in the NCEES PE Mechanical Reference Handbook, which will be the only reference allowed on exam day. If you'd like to be notified when we publish the updated practice exam, use our contact form and let us know you're waiting for it.
For mechanical engineering, you must select one of the three exams available:

• Mechanical: Thermal and Fluids Systems
• Mechanical: HVAC and Refrigeration 
• Mechanical: Machine Design and Materials

With the exception of steam tables, everything you need is provided in the downloadable exam booklet (e.g. a psychrometric chart, and by the way, speaking of steam tables, you can download our own for free from our Free Resources page).  Relevant parameters required to solve specific problems (viscosity, thermal conductivity, Young's modulus, friction factors, etc) are provided in the problem statements.

HVAC&R and Machine Design FREE EXAMS COMING SOON