Which of the following is true with regard to circuit breaker interrupting capacity ratings?
a. NEMA tests are certified by unbiased reviewers.
b. UL tests now include NEMA ratings.
c. The interrupting capacity of a circuit breaker is the same for all voltage levels.
d. UL tests are self-certification.
b. UL tests now include NEMA ratings.
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Dimensional constraints cannot be added:
a. using inferred constraints b. by selecting an object c. using AutoConstrain d. by selecting constraint points
In a sidewall sheeting plan, panels that have the same width and height are noted by using the same ____.
A. mark number B. stock number C. product ID number D. legend symbol
Heat pump thermostats generally require two stages of heating in order to control:
A) The first- and second-stage heat strips. B) The compressor and outdoor fan. C) The indoor and outdoor sections. D) The auxiliary heat.
An electric heating unit in a duct system is classified as a ____.
A. natural draft convector B. forced draft convector C. forced draft conductor D. radiant heater