What is a thermal symmetry boundary condition? How is it expressed mathematically?
What will be an ideal response?
A heat transfer problem that is symmetric about a plane, line, or point is said to have thermal symmetry about that plane, line, or point. The thermal symmetry boundary condition is a mathematical expression of this thermal symmetry. It is equivalent to insulation or zero heat flux boundary condition, and is expressed at a point x0 as 
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Environmental elements that cause stress are called stressors
Indicate whether the statement is true or false.
What would be the best to use when monitoring the temperature of a new engine that has just been started?
A. scan tool B. factory gauge C. warning indicator D. pyrometer
The standard welding symbol of two parallel vertical lines is the symbol that represents a ____ weld.
A. bevel B. square C. V D. triangular E. none of the above
According to Pascal?s law, _____
a. pressure produced in a liquid transmits force equally in all directions b. liquids compress in the same manner as gases c. a confined liquid does not transmit pressure d. hydraulic fluid does not expand