Describe the two types of flames and their characteristics
What will be an ideal response?
Yellow and blue. Yellow, called luminous combustion, is from incomplete combustion, gives off lots of light and some heat. Blue, called non-luminous combustion, is from complete combustion and gives off lots of heat and a little light.
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If all of the cross webs must be cut, leaving only the end of the block holding it together, it is called a ______ .
A. center B. quarterback C. halfback D. fullback
Read and record the vernier caliper measurements on the scale shown here:
What will be an ideal response?
What does an orifice plate use to create a measurable pressure drop?
a. Pressure taps b. A movable pressure plate c. A fixed-area restriction d. Variable vanes on a plate
The ENERGY STAR® label is awarded to those packages air-to air units with EERs of ________ or greater, SEERs of ________ or greater and HSPFs of ________ or greater
A) EER 12, SEER 14.5 , HSPF 8.2 B) EER 11, SEER 14, HSPF 8 C) EER 10, SEER 13, HSPF 7.7 D) EER 16, SEER 22, HSPF 13