The refrigerant in a mechanical compression refrigeration system absorbs and releases heat by:
A) Changing its physical state. B) Converting energy to mass.
C) Changing its molecular composition. D) Changing its temperature.
A
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What overload protection is required for the motors of the fan coil units in the cooling equipment?
What will be an ideal response?
A section of an exam contains four True-False questions. A completed exam paper is selected at random, and the four answers are recorded.
a. List all 16 outcomes in the sample space. b. Assuming the outcomes to be equally likely, find the probability that all the answers are the same. c. Assuming the outcomes to be equally likely, find the probability that exactly one of the four answers is “True.” d. Assuming the outcomes to be equally likely, find the probability that at most one of the four answers is “True.”
What is the step-down turns ratio of a transformer with 200 turns in the primary and 100 turns in the secondary?
a. 1:2 b. 2:1 c. 2:2 d. 3:4
If you are interested in spending only a minimal amount of time flower gardening, which of the following should you include in your garden (choose 2):
What will be an ideal response?