If lighting units and other appliances are also supplied, the rating of cord- and plug-connected room air conditioners must not exceed what percentage of the branch circuit rating?
a. 50%
b. 70%
c. 80%
d. 90%
a. 50%
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Pueden caer objetos del andamiaje, por lo que, para proteger a los trabajadores que estén en el suelo, debe:
a. usar andamiajes únicamente cuando no haya nadie más trabajando en el área. b. gritar "cuidado" para advertir a quienes trabajan abajo de objetos que caen. c. armar barreras debajo del andamiaje para evitar que transiten personas. d. utilizar redes, pantallas de protección o mallas para escombros y colocar tablas de pie.
In lower-power UPS applications, the double-conversion UPS typically requires a DC power supply how many times larger than the full-load rating of the UPS?
a. 0.30 b. 0.75 c. 1.50 d. 3.00
Why is the common-collector called an emitter follower?
What will be an ideal response?
Which of the following is NOT a physical resource?
a. Raw materials b. A robotic welder c. Labor used in production d. An inventory of finished goods e. An office building