Electrical Systems MCQ

What does not constitute fast bilateral storage?

Answer

Correct Answer: Pumped hydroelectric storage

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What does EHV stand for?

Answer

Correct Answer: Extra High Voltage

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What is Extra High Voltage?

Answer

Correct Answer: An electrical system or cable designed to operate at 345kv (nominal) or higher.

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What is electromotive force?

Answer

Correct Answer: Potential causing electricity to flow in a closed circuit.

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What is electricity?

Answer

Correct Answer: The flow of electrons through a conducting medium.

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What is electric load shaping?

Answer

Correct Answer: The scheduling and operation of generating resources to meet changing load levels

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What is an electric generator?

Answer

Correct Answer: A machine that transforms mechanical power into electric power.

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What is the most basic form of coupling in the grid?

Answer

Correct Answer: Direct Electric Interconnection

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What is an electric cooperative?

Answer

Correct Answer: A private, not-for-profit business governed by its consumers (known as consumer-members)

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After what conditions will an electrical relay produce sudden changes in one or more electrical circuits?

Answer

Correct Answer: The appearance of certain conditions in the controlling circuit.

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What is lighting efficiency?

Answer

Correct Answer: A ratio of light emitted from a luminaire to the light produced by the bare lamp.

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What is the discharge current?

Answer

Correct Answer: The surge current that is dissipated through a surge arrester.

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What is the surge current dissipated through a surge arrester called?

Answer

Correct Answer: Discharge Current

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What is the opposite of direct current?

Answer

Correct Answer: Alternating current

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Which of the following is not a type of current?

Answer

Correct Answer: AC - Alternating Current

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What is the Dielectric Test?

Answer

Correct Answer: A test that is used to verify an insulation system.

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What is a dielectric?

Answer

Correct Answer: Any insulating medium which intervenes between two conductors and permits electrostatic attraction and repulsion to take place across it.

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What is the optimization of the incremental cost of delivered power called?

Answer

Correct Answer: Economic Dispatch

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What is the name of the speed control mode that enables synchronous generators to be run in parallel?

Answer

Correct Answer: Droop Speed Control

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What is the purpose of a Distribution Transformer?

Answer

Correct Answer: Transfers electrical energy from a primary to a secondary distribution circuit

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A distribution transformer is a transformer for transferring electrical energy from a primary distribution circuit to a:

Answer

Correct Answer: Secondary distribution circuit

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What is the distribution system operator responsible for?

Answer

Correct Answer: Providing reliable real-time distribution service, including the operation of Distributed Energy Resource.

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What is the responsible for providing reliable real-time distribution service, including the operation of Distributed Energy Resource?

Answer

Correct Answer: Distribution System Operator

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The distribution system is generally considered to be anything from the distribution substation fence to what?

Answer

Correct Answer: The customer meter

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What is Distributed Energy Resource (DER)?

Answer

Correct Answer: Small-scale distributed generation and storage, usually connected to a distribution grid.

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What is Distributed Energy Resource?

Answer

Correct Answer: Small-scale distributed generation and storage, usually connected to a distribution grid.

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What is the full meaning of "DR"?

Answer

Correct Answer: Demand Response

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What is electric current?

Answer

Correct Answer: The rate of flow of electrical energy through a conductor or wire

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What is measured in amperes?

Answer

Correct Answer: Electric current

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What does the CSA registered mark show?

Answer

Correct Answer: That a product has been independently tested and certified to meet recognized standards for safety or performance.

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A connector is wired to the _____.

Answer

Correct Answer: Source of power

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Which of the following is NOT a conducting material?

Answer

Correct Answer: Paper

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Which of the following is the best conductor?

Answer

Correct Answer: Silver

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What does CE stand for?

Answer

Correct Answer: Conformite Europeene

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What does the CE marking on products indicate?

Answer

Correct Answer: Compliance with all applicable directives

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What does a carbon monoxide alarm do?

Answer

Correct Answer: Detect the presence of carbon monoxide in the air

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What is a cable harness?

Answer

Correct Answer: A string of cables and/or wires which transmit informational signals or operating currents (energy)

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What is the main purpose of a contingency reserve?

Answer

Correct Answer: To cover the unplanned trip of a large generator or transmission line

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What is the main purpose of Contingency Analysis?

Answer

Correct Answer: To show operators the effects of future outages

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What is the definition of contingency?

Answer

Correct Answer: The unexpected failure or outage of a system component

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What is cogeneration?

Answer

Correct Answer: The generation of electric energy and commercial or industrial quality heat or steam from a single facility.

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What does an unbalanced circuit mean?

Answer

Correct Answer: A circuit with two sides that are electrically unlike

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What does a circuit do?

Answer

Correct Answer: Allows an electric current to flow through it

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What is the main purpose of a circuit breaker?

Answer

Correct Answer: To make, carry, and break currents under normal and abnormal conditions.

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What is a cable?

Answer

Correct Answer: A set of wires, usually encased in an outer protective jacket.

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A "cord" would be a cable by this definition so far, but what is the main difference between a cord and a cable?

Answer

Correct Answer: A cord is more flexible and often has a plug end for a portable appliance or lamp.

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What does the word "Bundle" mean in the context of electrical engineering?

Answer

Correct Answer: Multiple cables used to form one phase of an overhead circuit.

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What does it mean to "buck" voltage?

Answer

Correct Answer: To lower the voltage.

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What does "Buck" mean?

Answer

Correct Answer: The act of lowering the voltage.

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What is the term for a reduction of voltage on the system?

Answer

Correct Answer: Brownout

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What does the word "Brownout" refer to?

Answer

Correct Answer: A reduction of voltage on the system.

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What is a Boost Charge?

Answer

Correct Answer: A charge applied to a battery which is already near a state of full charge, usually of short duration.

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What is the purpose of a boost charge?

Answer

Correct Answer: To charge a battery that is already near full charge

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What does a battery backup provide power for in case of an electrical outage?

Answer

Correct Answer: Electrical equipment

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What does a bus do?

Answer

Correct Answer: Serves as a common connection for two or more circuits.

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What is the capacity, in equipment and conductors, installed on the bulk system in excess of that required to carry the peak load called?

Answer

Correct Answer: Bulk System Reserve

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What is the Bulk Power System?

Answer

Correct Answer: An interconnected system for the movement or transfer of electric energy in bulk on transmission levels.

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What is B2G?

Answer

Correct Answer: The interaction of buildings and grids, wherein services may be exchanged in either direction.

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What is a branch?

Answer

Correct Answer: One, two, or more circuits whose main power is connected through the same main switch or device.

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What is the main power connected through in a Branch?

Answer

Correct Answer: Main switch or device

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What is the definition of Black Start?

Answer

Correct Answer: The process of restoring an electric power station

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In a bilateral market, who agrees to the mutually agreeable terms?

Answer

Correct Answer: Buyer and Seller

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What is the minimum amount of electric power delivered or required over a given period at a constant rate?

Answer

Correct Answer: Base Load

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What is the base load?

Answer

Correct Answer: The minimum amount of electric power delivered or required over a given period at a constant rate.

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Which of the following is not a base-load generating plant?

Answer

Correct Answer: Solar Power Plant

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Which type of generating plant is typically dispatched at constant or near-constant levels?

Answer

Correct Answer: Base-load generating plants

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What does a Balancing Authority Area do?

Answer

Correct Answer: Manages generation dispatch and balance, power interchange with neighboring Balancing Authority Areas, and load frequency control.

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What is the responsible entity that integrates resource plans ahead of time called?

Answer

Correct Answer: Balancing Authority

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What does a Balancing Authority do?

Answer

Correct Answer: Maintains demand and resource balance within a Balancing Authority Area

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What is the fundamental balance required in a balancing area?

Answer

Correct Answer: The total of all generation must equal the total of all loads.

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What is the ancillary service?

Answer

Correct Answer: Services that assist the grid operator in maintaining system balance.

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Which of the following is not an Aggregator (Demand Response)?

Answer

Correct Answer: Independent System Operator

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What does AMI stand for?

Answer

Correct Answer: Advanced Metering Infrastructure

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What is Advanced Flexible Distribution?

Answer

Correct Answer: A distribution system where power can be derived from a variable mix of grid and local sources.

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What is the main component of an advanced flexible distribution system?

Answer

Correct Answer: A variable mix of grid and local sources.

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What is the definition of adaptability?

Answer

Correct Answer: The ability to respond to change in demand and supply

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What is a person approved or assigned by the employer to perform a specific type of duty or duties at the jobsite called?

Answer

Correct Answer: A designated person.

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What does "Approved" mean?

Answer

Correct Answer: Sanctioned, endorsed, accredited, certified, or accepted as satisfactory by a duly constituted and nationally recognized authority or agency.

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What does ANSI stand for?

Answer

Correct Answer: American National Standards Institute

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What is an arc flash?

Answer

Correct Answer: The flow of current through the air between phase conductors or phase and neutral or ground.

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What is an Arc?

Answer

Correct Answer: A discharge of electricity through air or a gas.

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What is the purpose of an anchor?

Answer

Correct Answer: To support and hold in place conductors when they are terminated at a pole or structure.

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What does Amperage measure?

Answer

Correct Answer: The flow rate of electricity

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What is Amperage?

Answer

Correct Answer: Measurement of the flow rate of electricity

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What does ampacity refer to?

Answer

Correct Answer: Current in amperes that a conductor can carry continuously without exceeding its temperature rating.

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What does AWG stand for?

Answer

Correct Answer: American Wire Gage

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What is the name of the current that reverses direction at regular intervals?

Answer

Correct Answer: Alternating current

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What does "Al" represent?

Answer

Correct Answer: Aluminum

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What is the chemical symbol for aluminum?

Answer

Correct Answer: Al

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What does AIS stand for?

Answer

Correct Answer: Air Insulated Switchgear

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What is the main purpose of an air blast breaker?

Answer

Correct Answer: To blow-out the arc when the contacts open

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What blows out the arc in an air blast circuit breaker?

Answer

Correct Answer: A blast of compressed air

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What does an adapter do?

Answer

Correct Answer: Allows different devices to connect

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What is an adapter?

Answer

Correct Answer: A cord or block style device with different ends that allows different devices to connect.

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What is the definition for Apparent Power?

Answer

Correct Answer: The vector sum of Active Power and Reactive Power

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What is the original state of the active material in a battery during the charging process?

Answer

Correct Answer: The material returns to its original state

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What is the definition of active material?

Answer

Correct Answer: Material which reacts chemically to produce electrical energy when the cell discharges

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What is an Access Point?

Answer

Correct Answer: A wireless networked device usually connected to a wireless LAN used to access the wired LAN

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What does 'ACB' stand for?

Answer

Correct Answer: Air Circuit Breaker

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What does AC stand for?

Answer

Correct Answer: Alternating Current

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What does "Amp" stand for?

Answer

Correct Answer: The measurement of the electrical current flowing in a circuit at any given moment.

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