The voltage that is set for the desired speed of the motor is called the ____.
A. feedback signal
B. error signal
C. reference signal
D. sawtooth signal
Answer: C
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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.
Any system of ventilation should draw the fumes or smoke away before it rises past the level of the welder's ____.
A. shin B. hip C. chest D. face
Which of the following statements regarding chillers is true?
A) Flooded chillers have less potential for freeze-ups than others chillers. B) Regional zone chillers are more cost effective than centralized units. C) Dry (direct expansion) chillers require less refrigerant than flooded chillers. D) Top-loaded chillers do not use the shell-and-tube arrangements.
A bell housing is another name for a clutch housing.
Answer the following statement true (T) or false (F)