Use the following statement: “Ice is forming on the roof with density gradient.” Develop a series of questions to better understand the need.
What will be an ideal response?
Why the ice is forming?
How often the ice forms?
What is the slope (thickness of ice on both sides?
How much ice is being formed?
Does the formation office cause problems for the roof?
How long does the ice stay?
Etc.
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The level of voltage at which the relay coil is energized to move the contacts from their normal, unoperated position to their operated position is called ____.
a. inrush current b. sealed current c. pickup voltage d. drop-out voltage
The following temperatures in degrees F were recorded at noon over a three week period: 66, 68, 70, 73, 74, 78, 82, 74, 68, 65, 67, 62, 63, 71, 74, 76, 79, 80, 82, 84, 75.
(a) Compute the mean, median, and mode. (b) Using 5 degree intervals starting with 61–65, draw a frequency diagram.
What are some of the possible causes of incorrect toe?
What will be an ideal response?
How is superheat determined?
a. Subtract evaporator temperature from the suction line temperature. b. Add the evaporator temperature to the suction line temperature. c. Use the pressure/ temperature chart to determine suction line temperature. d. Calculate the difference between air temperature entering and leaving the evaporator.