1. Find the electron drift current density Jn of the silicon semiconductor below at 300 K. No= 1018 cm³ and Ecritical = 10 cm³. 3ook ND=10'8 k 0.1 μm h-type lov

Which of the following distribution systems would you select for a medical research campus? A) Primary selective system. C) Secondary loop system. B) Distributed radial system. D) Primary and secondary loop system. Authoritative rules for electrical design and installation are contained in which of the following 7) documents? A) ASHRAE Handbook of Fundamentals. B) NFPA 101. C) NEC. The illumination from a point source 4 ft. above a surface is 100 foot-candles, and the surface is normal to the source. What will be the illumination level if the surface is tilted 45°? A) 50 foot-candles. B) 100 foot-candles. C) 71 foot-candles. Which of the following lamp types is generally the most energy efficient? A) Incandescent. C) High intensity discharge. B) LED. D) Fluorescent.

A cylindrical 00 AWG copper wire is coated with NEMA class B insulation. The normal operating temperature of the wire is 40°C. What is the maximum current the wire can carry for 1 second without exceeding the NEMA temperature rating?

What code set standard for electrical installation work