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CM 411 Exam 1 Flashcards Questions With 100% Accurate Solutions $10.49   Add to cart

Exam (elaborations)

CM 411 Exam 1 Flashcards Questions With 100% Accurate Solutions

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  • Course
  • CM 411
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  • CM 411

Assume that you have a 120 volt circuit with 2 lights (of equal resistance) connected in a series. What is the voltage across each light? - CORRECT ANSWER-60 Assume that you have a 120 volt circuit with 2 lights (of equal resistance) connected in parallel. What is the voltage across each light? ...

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  • September 7, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CM 411
  • CM 411
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CM 411 Exam 1 Flashcards Questions
With 100% Accurate Solutions

Assume that you have a 120 volt circuit with 2 lights (of equal resistance) connected in
a series. What is the voltage across each light? - CORRECT ANSWER-60



Assume that you have a 120 volt circuit with 2 lights (of equal resistance) connected in
parallel. What is the voltage across each light? - CORRECT ANSWER-120



An Ohm is an electrical unit that measures - CORRECT ANSWER-resistance



Watts are an electrical unit that measures - CORRECT ANSWER-power



The power formula is useful when determining expected ________ values because
most electrical equipment lists a voltage and power rating - CORRECT ANSWER-
current



Power and energy differ as follows: - CORRECT ANSWER-power is instantaneous,
while energy is time dependent



The difference between a cable and a wire is: - CORRECT ANSWER-a cable is an
assembly of wires



Assuming the same type of insulation, which wire has a larger diameter? - CORRECT
ANSWER-500 kcmil



Assuming the same type of insulation, which wire can carry more current? - CORRECT
ANSWER-500 kcmil



The "14" in a cable marked "14/2" indicates: - CORRECT ANSWER-the size of the wire

, Electrical device boxes can be ______ shaped - CORRECT ANSWER-square,
octagonal, or rectangular



Once installed, receptacle boxes in walls can be completely permanently covered for
appearance - CORRECT ANSWER-False



The size of an outlet box is based upon the location of the outlet box - CORRECT
ANSWER-False



______ is the joining of two or more electrical conductors by mechanically twisting the
conductors together or by using a special splicing device - CORRECT ANSWER-
Splicing



Panelboard circuit breakers can provide good protection in the event you touch an
energized circuit - CORRECT ANSWER-False



What type of lighting fixture would you specify if you wanted the best color rendition? -
CORRECT ANSWER-LED



What type of lighting fixture would you specify if you wanted the longest lamp life? -
CORRECT ANSWER-Mercury Vapor



What type of lighting fixture would you specify if you wanted the best overall
combination of cost, efficiency, color rendition, and life? - CORRECT ANSWER-
Fluorescent



What term is used as a measure of light energy? - CORRECT ANSWER-Lumen



What feature is performed by a lighting ballast? - CORRECT ANSWER-All of these are
true:

Provide a high voltage to start the arc

Provides a built-in power factor correction

Maintain the voltage to stabilize the arc

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