Is it possible for mechanical shock arrestors to lose their air charge?
What will be an ideal response?
Yes, if the bellows or internal O-rings fail.
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For a three-pole circuit breaker, ____ pole(s) is (are) required for each breaker used.
A. one B. two C. three D. four
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Individual dots of color on a display are known as ___________.
A. splashes B. blocks C. cells D. pixels
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If a system utilizes two transformers, an isolating subbase should be used.
Answer the following statement true (T) or false (F)
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While very effective at removing small contaminants, HEPA filters are not used in residential applications because of what reason?
A) They cause a high pressure drop in the duct. B) Not available in home centers C) Extremely high cost D) Low efficiency
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