Consider a hot baked potato. Will the potato cool faster or slower when we blow the warm air coming from our lungs on it instead of letting it cool naturally in the cooler air in the room? Explain.
What will be an ideal response?
The potato will normally cool faster by blowing warm air to it despite the smaller temperature difference in this case since the fluid motion caused by blowing enhances the heat transfer coefficient considerably.
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The following style(s) can be found in air-cooled condensers: ____.
A. vertical airflow pattern, taking air into the bottom and discharging it out the top B. air blowing horizontally through C. taking air in at the sides and discharging it out the top D. All of the above.
One fire extinguisher in a work area is sufficient:
A) When water is accessible in a work area. B) If its capacity is large enough to handle a fire that could occur. C) Provided it is capable of extinguishing class A, B, C, and D fires. D) As long as it is the right class.
A contractor borrows $750 at 12% interest rate per annum and pays the debt 6 months later. What is the interest charged?
Fill in the blank(s) with the appropriate word(s).
A simple reciprocating engine has a cylinder, a piston, a connecting rod, and a crankshaft.
Answer the following statement true (T) or false (F)