Question 196Refrigeration/AC - Assistant Engineer70% to pass
Which of the following statements is true concerning the gauge labeled "A" of the illustrated gauge manifold set? Illustration GS-RA-01
AI Explanation
The correct answer is A) The gauge labeled "A" is a compound gauge and is usually color-coded blue.
Compound gauges measure both pressure and vacuum and are typically color-coded blue to distinguish them from standard pressure gauges, which are usually color-coded red. The gauge labeled "A" in the illustration GS-RA-01 is a compound gauge, which can measure both positive and negative pressure, and is therefore the correct choice.
The other options are incorrect because B) a compound gauge is not usually color-coded red, C) a standard pressure gauge is not usually color-coded blue, and D) the gauge labeled "A" is a compound gauge, not a standard pressure gauge.
Related Questions
#194 If increasing the cooling water flow to a refrigeration condenser fails to lower the condenser pressure, the probable cause may be due to what condition? #195 Which of the following statements is true concerning the illustrated gauge manifold set? Illustration GS-RA-01 #197 Which of the illustrated gauges is capable of measuring vacuums at the micron level for the purpose of proving system dehydration during system evacuation with a vacuum pump, but displays the achieved vacuums at incremental threshold intervals rather than continuously? Illustration GS-RA-37 #198 What is true concerning frost build-up on the evaporator coils of a multi-box direct expansion refrigeration system? #199 Some 'hot gas' defrost systems reheat the refrigerant just prior to its returning to the compressor for what purpose?