Exam (elaborations)
CM 411 Final Exam
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Exam of 9 pages for the course RAD at RAD (CM 411 Final Exam)
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CM 411 Final ExamA_____is an electrical device containing fuses or circuit breakers for protecting
the individual circuits of a residence and serves as a means of disconnecting the
entire residence from the distribution system - CORRECT ANSWER-Service
Panel
A(n)____is an electric device that uses electromagnetism to change (step-up or
step-down) AC voltage from one level to another - CORRECT
ANSWER-Transformer
A____is an electric over current protection device used to limit the rate of current
flow in a circuit - CORRECT ANSWER-Fuse
The broad categories of fuses are plug,cartridge, and ____ - CORRECT
ANSWER-Blade
A(n)____is a small, open tool container (pouch) for storing commonly used
electrical tools - CORRECT ANSWER-Electrical tool pouch
____is clothing and/or equipment worn by individuals to reduce the possibility of
injury in the work area - CORRECT ANSWER-Personal Protective Equipment
(PPE)
The five common classes of _____are Class A, Class B, Class C,Class D, and
Class K - CORRECT ANSWER-Fires
Class ____ Fires occur in facilites near or in electrical equipment - CORRECT
ANSWER-B
The Major Sources of energy are coal, oil and - CORRECT ANSWER-Gas,
Wood, Nuclear Power
A(n)____is half of a cycle - CORRECT ANSWER-Alternation
, The _____ Value of a sine wave is the maximum value of either the positive or
negetive alternations - CORRECT ANSWER-Peak
The____Value of a sine wave is the value that produces the same amount of
heat in a pure resistive circuit as a DC current of the same value - CORRECT
ANSWER-root-mean-square
____current is current that flows in only one direction - CORRECT
ANSWER-Direct
A(n)____circuit is a circuit in which current leads voltage - CORRECT
ANSWER-Capacitive
A(n)____ is a material that has a very high resistance and resists the flow of
electrons - CORRECT ANSWER-Insulator
____light is the portion of the electromagnetic spectrum to which the human eye
responds - CORRECT ANSWER-Visible
____is the effect that occurs when light falls on a surface - CORRECT
ANSWER-Illumination
A(n)____ is the amount of light produced by a lamp divided by the area that is
illuminated - CORRECT ANSWER-Footcandle
Most digital displays include a(n)___to show changes and trends in a circuit -
CORRECT ANSWER-bar graph
____ voltages are produced by the magnetic fields generated by current-carrying
conductors, fluorescent lighting, and operating electrical equipment - CORRECT
ANSWER-Ghost
A____is test instrument that indicates the presence of voltage when the rest tip
touches, or is near, an energized hot conductor or energized metal part -
CORRECT ANSWER-Voltage Indicator
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