In insulating, a membrane is _____.
a. a thick layer of insulation jacket
b. thin, preformed jacketing installed over insulation on pipes and components
c. the tissue lining a worker’s sinus passages requiring respiratory protection
d. a thin sheet or film of vapor retardant material applied to insulation
d. a thin sheet or film of vapor retardant material applied to insulation
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Within an atom, which of the following is the centermost structure?
a. proton b. nucleus c. nucleus d. charge
Which of the following does 29 CFR 1910.178 not require?
A) Refresher training B) Annual assessment of forklift operator performance C) Initial training for operators D) Evaluation of forklift operator performance at least every three years
A medium-size motor has a frame number of 284T. The D dimension of this motor is _____.
a. 2" b. 5" c. 7" d. 10"
Organizations that support the TAB industry by developing standards and offering certification include:
A) NFPA, NEC, and NEBB. B) NEC, UL, and CSA. C) AABC, TABB, and NEBB. D) ETL, ASME, and NFPA.