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As the Computer Based Testing (CBT) is implemented for all Engineering PE exams starting from April 2020, I would like to initiate a thread to share the experience on Mechanical engineering HVAC & R and Thermal Fluid Systems (TFS) - PE exam as soon as candidates take the exam and share their experience. Below are some areas of concern, Note: Do not post and disclose any question or part of question here. This is just to share overall experience by not disclosing any details of the exam. 1. Overall difficulty level? 2. Question outside the NCEES reference manual? If yes diff
Black is the best absorber and emitter of light and heat. Therefore wearing a blacks shirt is said to keep you cooler in the summer as the black shirt will absorb and emitt all light emitted from the sun while absorbing heat emitted from your body within the shirt (cooling you off). Another example is the SR71 black bird is black to help absorb internal heat while emitting that heat away from the plane, keeping the plane cooler. Whit colors are good at reflecting light. Wearing a white shirt would reflect light emitted from the sun but theoretically "cook" you from the inside as t