Starting methods for single-phase motors involve disconnecting the start winding of a split-phase motor when the motor reaches about ____ percent of its rated speed.
A. 45
B. 55
C. 65
D. 75
Answer: D
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Regardless of the type of photoemissive device used, or the type circuit it is used in, the greatest advantage of the photoemissive device is ____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is true when installing grounding at more than one building?
a. Only the equipment grounding conductor is extended to the second building. b. The second building never requires its own grounding electrode. c. The equipment grounding conductor from the main building is terminated on a bus isolated from the rest of the cabinet. d. The grounded circuit conductor and the equipment grounding conductor must both be extended to the second building.
Which of the following statements concerning standards and codes is correct?
A) Standards describe the industry's best practices. B) Codes are generally broken into five areas: electrical, plumbing, mechanical, refrigeration, and other. C) Codes are written by government agencies. D) Standards are enforced at a national level.
The product of combustion is energy in the form of light.