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 following7)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 isnormal 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.

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Which of the following lamp types is generally the most energy efficient? A) Incandescent. C) High intensity discharge. B) LED. D) Fluorescent.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter16: Branch Circuits For The Garage And Outdoors

Section: Chapter Questions

Problem 17R: When outdoor receptacles are installed where a cord will be plugged in permanently, such as in the...

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Concept explainers

Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).

Question

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.

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