Regardless of the insulation value, ____ is the most critical element in overhead doors, and finding units with high performance of this element is a challenge.
A. air leakage
B. conduction
C. heat loss
D. lighting
Answer: A
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The recirculation door is an example of a ________ actuator
A) Variable-position B) Three-position C) Dual-position D) None of these
During the process of a ground survey, the survey team records spot elevations at known points. These records are called ____.
A. survey points or field notes B. elevation points or field notes C. survey points or ground notes D. elevation points or ground notes
A thermometer registered 85 degrees F, but the actual temperature was 90 degrees F. The percent error to the nearest tenth is ____________________%
Fill in the blank(s) with the appropriate word(s).
____ is the elapsed time between the instant a deviation of the controlled variable occurs, and the corrective action begins.
A. Time lag B. Dynamic response C. Dead time D. Pure lag