4/5/25, 6:30 CFI Review |
PM
CFI REVIEW EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED LATEST UPDATE
Practice questions for this set
Learn 1/7 Study using Learn
When copper and aluminum are joined, the resulting metal's melting temperature is what
in relation to each of the original metals' melting temp?
Select the correct term
1Steel, Aluminum, Copper, Silver 2PVC
Lower than either individual metal, ie, lower
3 4Power, which is expressed as watts
than 1220F
Don't know?
60 hertz/sec Utilities provide electricity at a frequency of_______per second in the US
Order these 4 metals in order of least conductivity to most - (Silver, Copper, steel,
Steel, Aluminum, Copper, Silver
aluminum)
E (Ohms Law) Voltage
I (Ohms Law) Amperage
R (Ohms Law) Resistance
E=IxR Most basic Ohms Law equation
Power, which is expressed as watts Rate at which energy is used
1. Antelopes in West Virginia My 3 silly tricks to remember the three equations needed for electrical
2.Everglades are IRegular
3.Virginians Ate Octopus
Ungrounded, Grounded, Grounding 3 proper terms for Hot, Neutral, Ground
277 V common voltage of modern lighting systems in 3 phase buiildings
480V, 240V, or 208V 3 potential voltages between current carrying conductors in a 3 phase system
Sustained High Power faulting by: Indications of damage to the insulation on the service entry conductors is an
1. Short circuits indication of what 2 things that can lead to ignition of most combustibles
2.Ground Faults
1. Turn off power 3 functions of of the service equipment (panel)
2.Protection against electrical
malfunctions
3.Divide power into branch circuits
6' max distance flex conduit can be used for grounding
1/
3
PM
CFI REVIEW EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED LATEST UPDATE
Practice questions for this set
Learn 1/7 Study using Learn
When copper and aluminum are joined, the resulting metal's melting temperature is what
in relation to each of the original metals' melting temp?
Select the correct term
1Steel, Aluminum, Copper, Silver 2PVC
Lower than either individual metal, ie, lower
3 4Power, which is expressed as watts
than 1220F
Don't know?
60 hertz/sec Utilities provide electricity at a frequency of_______per second in the US
Order these 4 metals in order of least conductivity to most - (Silver, Copper, steel,
Steel, Aluminum, Copper, Silver
aluminum)
E (Ohms Law) Voltage
I (Ohms Law) Amperage
R (Ohms Law) Resistance
E=IxR Most basic Ohms Law equation
Power, which is expressed as watts Rate at which energy is used
1. Antelopes in West Virginia My 3 silly tricks to remember the three equations needed for electrical
2.Everglades are IRegular
3.Virginians Ate Octopus
Ungrounded, Grounded, Grounding 3 proper terms for Hot, Neutral, Ground
277 V common voltage of modern lighting systems in 3 phase buiildings
480V, 240V, or 208V 3 potential voltages between current carrying conductors in a 3 phase system
Sustained High Power faulting by: Indications of damage to the insulation on the service entry conductors is an
1. Short circuits indication of what 2 things that can lead to ignition of most combustibles
2.Ground Faults
1. Turn off power 3 functions of of the service equipment (panel)
2.Protection against electrical
malfunctions
3.Divide power into branch circuits
6' max distance flex conduit can be used for grounding
1/
3
