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Electrical Standards and Practices Exam 2024/2025 Questions With Completed & Verified Solutions.
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Electrical Standards and Practices Exam 2024/2025 Questions With Completed & Verified Solutions.
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Electrical Standards and PracticesElectricity - ANS Energy used to run household appliances and industrial machinery; can
produce light, sound, heat and numerous other uses.
Current - ANS flow of electricity through a circuit; either AC or DC.
Alternating Current (AC) - 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) - ANS electric current flowing in one direction. This type of current is
commonly found in industries.
Ampere - ANS unit used in measuring intensity of flow of electricity. Symbol for it is "I"
Volt - ANS unit for measuring electrical pressure or force, known as electromotive force.
Symbol for it is "E" or "V".
Watt - ANS unit of electric power. Volt X Ampere = _____.
Circuit - 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 - 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 - 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 - ANS any substance capable of conveying an electric current. In the home, copper
wire is usually used.
Bare Conductor - ANS wire or cable with no insulation or covering.
Covered Conductor - ANS wire or cable covered with 1 or more layers of insulation.
Fuse - ANS safety device that cuts off the flow of electricity when the current flowing through
the fuse exceeds its rated capacity.
, Ground - 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 - ANS numerical system used to label electric conductor sizes, given in
American Wire Gauge (AWG) or square-millimeters (mm2 ) diameter.
Wires - ANS conductors carrying the electric current or power to the load; usually black or red.
Cable - ANS conductors insulated from one another.
Service - ANS conductor and equipment for delivering energy from the electricity supply system
to the wiring system of the premises.
Service Drop - 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 - ANS material that will not permit the passage of electricity.
Neutral Wire - ANS third wire in a 3-wire distribution circuit; it is usually white or light gray and is
connected to the ground.
Service Panel - 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 - ANS voltage loss when wires carry current. The longer the cord, the greater the
voltage drop.
Impedance - ANS a measure of the complex resistive and reactive attributes of a component in
an alternating-current circuit.
Frequency - ANS The number of periods per unit time stated in cycles per seconds or Hertz.
For alternating-current power lines, the most widely used frequencies are 60 and 50 Hertz.
Resistance - ANS restricts the flow of current; Unit of resistance is Ohm. The more resistance,
the less current flows.
True - ANS Electricity is usually generated by a generator that converts mechanical energy into
electrical energy. (True or False)
False (increase) - ANS The electricity is then run through a transformer where voltage is
increased to several hundred thousand volts and in some instances to a million or more volts.
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