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Electrical Standards And Practices Quiz 1 – Qs And As
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Electrical Standards And Practices Quiz 1 – Qs And As
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Electrical Standards And Practices Quiz 1 – Qs And AsElectricity Right Ans - Energy used to run household appliances and
industrial machinery; can produce light, sound, heat and numerous other uses.
Current Right Ans - flow of electricity through a circuit; either AC or DC.
Alternating Current (AC) Right Ans - electric current reversing its direction
of flow at regular intervals. For example, it would alternate 60 times every
second in a 60-cycle system. This type of current is commonly found in homes.
Direct Current (DC) Right Ans - electric current flowing in one direction.
This type of current is commonly found in industries.
Ampere Right Ans - unit used in measuring intensity of flow of electricity.
Symbol for it is "I"
Volt Right Ans - unit for measuring electrical pressure or force, known as
electromotive force. Symbol for it is "E" or "V".
Watt Right Ans - unit of electric power. Volt X Ampere = _____.
Circuit Right Ans - flow of electricity through 2 or more wires from the
supply source to 1 or more outlets and back to the source.
Circuit Breaker Right Ans - safety device used to break the flow of
electricity by opening the circuit automatically in the event of overloading, or
used to open or close it manually.
Short Circuit Right Ans - break in the flow of electricity due to overcurrent
resulting from a fault of negligible impedance between live conductors having
a difference in potential under normal operating conditions.
Conductor Right Ans - any substance capable of conveying an electric
current. In the home, copper wire is usually used.
Bare Conductor Right Ans - wire or cable with no insulation or covering.
, Covered Conductor Right Ans - wire or cable covered with 1 or more layers
of insulation.
Fuse Right Ans - safety device that cuts off the flow of electricity when the
current flowing through the fuse exceeds its rated capacity.
Ground Right Ans - to connect with the earth as to ground an electric wire
directly to the earth or indirectly through a water pipe or some other
conductor. Usually a green-colored wire is used for grounding the whole
electrical system to the earth. A white wire is usually used to ground
individual electrical components of the whole system.
Conductor Gauge Right Ans - numerical system used to label electric
conductor sizes, given in American Wire Gauge (AWG) or square-millimeters
(mm2 ) diameter.
Wires Right Ans - conductors carrying the electric current or power to the
load; usually black or red.
Cable Right Ans - conductors insulated from one another.
Service Right Ans - conductor and equipment for delivering energy from
the electricity supply system to the wiring system of the premises.
Service Drop Right Ans - overhead service connectors from the last pole or
other aerial support to and including the splices, if any, connecting to the
service entrance conductors at the building or other structure.
Insulator Right Ans - material that will not permit the passage of electricity.
Neutral Wire Right Ans - third wire in a 3-wire distribution circuit; it is
usually white or light gray and is connected to the ground.
Service Panel Right Ans - main panel or cabinet through which electricity is
brought to building and distributed. It contains the main disconnect switch
and fuses or circuit breakers.
Voltage Drop Right Ans - voltage loss when wires carry current. The longer
the cord, the greater the voltage drop.
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