NEC® tables such as 210.21(B)(3) present a requirement's ____.
A. multiple application possibilities
B. pricing structures
C. revision schedules
D. governing agencies
Answer: A
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Which of the following is a true statement?
A. A low pressure A/C cutout switch may prevent A/C compressor operation in extreme cold ambient temperatures. B. A low pressure A/C cutout switch may prevent A/C compressor operation if there is insufficient refrigerant in the system. C. A high pressure A/C cutout switch may prevent A/C compressor operation if the air flow through the condenser is restricted. D. All of the above are true statements.
A room fan operates on 120-volts and draws a current of 1.5 amps. What is the power used by the fan?
Given: E = 120 V; I = 1.5 A What will be an ideal response?
The ____ method of construction was originally developed for slabs that were to be poured at ground level and then lifted into place for multilevel structures.
A. pre-tensioning B. static-tensioning C. planned-tensioning D. post-tensioning
Why is the elbow joint considered to be extremely stable?
A) Its relatively loose joint capsule permits an extensive range of motion. B) It has especially large and numerous bursae. C) Powerful muscles originating on the trunk, shoulder girdle, and humerus cover the joint capsule. D) The bony surfaces of the humerus and ulna interlock. E) A rotator cuff is associated with the joint.