A direct current system with storage batteries is a PV system where loads can be powered ______________.
a. day only
b. night only
c. day or night
d. None of the above
c. day or night
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Electrical contractors typically employ _____.
a. commercial electricians b. electrical inspectors c. maintenance electricians d. E&I technicians
A medida que aumenta la ele- vación de unidad de una escalera, la profundidad de la huella _____.
a. disminuye en forma pro- porcional b. aumenta en forma pro- porcional c. no se modifica d. aumenta 1/2 pulgada por cada pulgada que cambie la elevación
The Brayton cycle engines ____
a. have an efficiency of almost 67% b. are less efficient than a Rankine engine c. are also known as gas turbines or jet engines d. is based on a closed system
The root reinforcement on the inside of the pipe from a completed weld should be flush to a maximum of
_____. a. 1/8" (3 mm) b. 1/4" (6 mm) c. 1/16" (1.6 mm) d. 1/2" (13 mm) WELDING LEVEL THREE MODULE 29306-16 EXAM 2 Copyright © 2016 NCCER. Permission is granted to reproduce this page provided that copies are for local use only and that each copy contains this notice.