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CM 411 EXAM 1 (ACTUAL 2025/2026) FLASHCARDS
CAL POLY CM 411 ELECTRICAL MIDTERM QUESTIONS
AND ANSWERS
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? - (answers)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? - (answers)120
An Ohm is an electrical unit that measures - (answers)resistance
Watts are an electrical unit that measures - (answers)power
The power formula is useful when determining expected ________ values
because most electrical equipment lists a voltage and power rating -
(answers)current
Power and energy differ as follows: - (answers)power is instantaneous, while
energy is time dependent
The difference between a cable and a wire is: - (answers)a cable is an assembly of
wires
Assuming the same type of insulation, which wire has a larger diameter? -
(answers)500 kcmil
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Assuming the same type of insulation, which wire can carry more current? -
(answers)500 kcmil
The "14" in a cable marked "14/2" indicates: - (answers)the size of the wire
Electrical device boxes can be ______ shaped - (answers)square, octagonal, or
rectangular
Once installed, receptacle boxes in walls can be completely permanently covered
for appearance - (answers)False
The size of an outlet box is based upon the location of the outlet box -
(answers)False
______ is the joining of two or more electrical conductors by mechanically
twisting the conductors together or by using a special splicing device -
(answers)Splicing
Panelboard circuit breakers can provide good protection in the event you touch
an energized circuit - (answers)False
What type of lighting fixture would you specify if you wanted the best color
rendition? - (answers)LED
CM 411 EXAM 1 (ACTUAL 2025/2026) FLASHCARDS
CAL POLY CM 411 ELECTRICAL MIDTERM QUESTIONS
AND ANSWERS
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? - (answers)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? - (answers)120
An Ohm is an electrical unit that measures - (answers)resistance
Watts are an electrical unit that measures - (answers)power
The power formula is useful when determining expected ________ values
because most electrical equipment lists a voltage and power rating -
(answers)current
Power and energy differ as follows: - (answers)power is instantaneous, while
energy is time dependent
The difference between a cable and a wire is: - (answers)a cable is an assembly of
wires
Assuming the same type of insulation, which wire has a larger diameter? -
(answers)500 kcmil
, 2|Page
Assuming the same type of insulation, which wire can carry more current? -
(answers)500 kcmil
The "14" in a cable marked "14/2" indicates: - (answers)the size of the wire
Electrical device boxes can be ______ shaped - (answers)square, octagonal, or
rectangular
Once installed, receptacle boxes in walls can be completely permanently covered
for appearance - (answers)False
The size of an outlet box is based upon the location of the outlet box -
(answers)False
______ is the joining of two or more electrical conductors by mechanically
twisting the conductors together or by using a special splicing device -
(answers)Splicing
Panelboard circuit breakers can provide good protection in the event you touch
an energized circuit - (answers)False
What type of lighting fixture would you specify if you wanted the best color
rendition? - (answers)LED
