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Anna [14]
2 years ago
12

If the power to a condensing unit has been turned off for an extended period of time, the _________________________ should be en

ergized first for the recommended time to protect the compressor from liquid floodback. A. blower motor B. thermostat C. crankcase heater D. condenser fan motor
Engineering
1 answer:
Mama L [17]2 years ago
7 0

Answer:

C. Crankcase heater

Explanation:

The crankcase heater of the compressor was developed to mitigate the problematic variation of temperature on the in and out sides of the crankcase that has the capacity to change the physical states of the refrigerant and oil, cause them migrate and possibly mix together. It does so by allowing the regulation of the temperature on the inside of the crankcase

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Explanation:

The stress due to a pulling force is obtained dividing the pulling force by the the area of the cross section of the rod. The respective area for a cylinder is:

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Replacing the diameter the area results:

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Therefore the the stress results:

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