How is HDPE pipe most commonly joined?
A) Tape B) Force C) Heat fusion D) Sealant
[Ques. 2] The temperature where small bubbles first start to form in saturated liquid is known as the:
A) Dew point. B) Triple point. C) Critical point. D) Bubble point.
[Ques. 3] Why are wastewater systems no longer allowed in some areas of the country?
A) Water resources are becoming increasingly scarce.
B) Solids found in waste water can clog up the condensers.
C) There are concerns about possible health issues of using sewage water to cool condensers.
D) Heating the wastewater interferes with the sewage treatment.
[Ques. 4] What difference is there between handling zeotropes and azeotropes?
A) There is no difference in how zeotropes and azeotropes are handled.
B) Zeotropes must leave the cylinder as a liquid but azeotropes may leave the cylinder as either a liquid or a vapor.
C) Azeotropes must leave the cylinder as a liquid but zeotropes may leave the cylinder as either a liquid or a vapor.
D) Zeotropes can be flammable and azeotropes are nonflammable.
[Ques. 5] Why do water and refrigerant flow in opposite directions in tube-in-tube condensers?
A) To decrease pressure B) To increase efficiency
C) To increase pressure D) To decrease efficiency
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