Where do commercial refrigeration "rack" systems get their name?
A) They use multiple compressors mounted in a row on a rack.
B) They use multiple individual condensing units mounted on a large rack outside.
C) RACK stands for Refrigeration Air Conditioning Kontrol.
D) They were originally developed by Refrigeration of Ackworth Corporation.
A
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Which of the following is the correct method for troubleshooting an electronic time delay?
a. Check the time delay with a stopwatch and adjust as necessary. b. Check for the presence of smoke near the furnace. c. Look for an unbalanced flame. d. Check the input and output voltage to and from the time delay.
During the Dark Age of Greece, the contraction of the eastern Mediterranean economy meant that
a. the Greeks were forced to turn to Egypt to find a strong trading partner and an ally against Persia. b. the Greeks engaged in many major and minor conflicts. c. the Greeks completely abandoned the Bronze Age culture. d. an economy based on aggressive sea trade was no longer sustainable.
What is the output voltage for every degree Centigrade?
A) 10 mV B) 6 mV C) 5 mV D) 5 V
Explain how counterbored holes are dimensioned.
What will be an ideal response?