Electric Industry Operations and Markets Coursera Quiz Answers

Electric Industry Operations and Markets Coursera Quiz Answers

Electric Industry Operations and Markets

by the Duke University

Enroll in this Course: Electric Industry

Hello friends in this article i am gone to share a Coursera Course: Electric Industry Operations and  Markets by the Duke University All Quiz Solutions with you..

About this Course

This is a two week course. In the first week you will learn about the core activities that the Industry executes to bring electricity to customers. We will review what electricity is, how it is generated, how it is transmitted, how it comes into buildings, and how consumption of electricity instantly feeds back on the transmission and generation of electricity. You will learn to:

  • Define what electricity is;
  • Describe how electricity is generated, transmitted and distributed;
  • Describe how electricity is generated, transmitted and distributed; and
  • Summarize how the consumption of electric energy instantly feeds back on the transmission and generation of electricity.

In the second week, the course shifts to the markets that drive Electric Industry operations. You will learn about the various costs of the electric industry’s core activities, how electricity is priced, the various ways that electric markets are structured, how these market structures determine which power plants are dispatched to produce electricity when, and how recent changes in generator fuel prices, generation technology, market regulations, and environmental regulations are transforming both Electric Industry Markets and Operations. You will learn to:

  • Describe the main cost components to the electric system;
  • Compare the costs of different types of power plants;
  • Interpret the retail pricing of electricity;
  • Explain the different types of electric markets and understand how they operate to dispatch electric supply to meet demand in real time; and Explain why and how the electric industry is regulated.

Electric Industry Operations and Markets
Week 1 Quiz Answers

 

Industry Overview

Question 1)
Which one of the following is NOT a sector of the Electric Industry?

  • Federal Power Administrations
  • Transmission & Distribution
  • Generation
  • Retail

Question 2)
Electricity is the flow of what?

  • Leptons
  • Protons
  • Neutrons
  • Electrons

Question 3)
Which term refers to the rate at which electric charge (as measured in Coulombs) moves through a conductor?

  • Resistance
  • Charge
  • Voltage
  • Current

Question 4)
The term that represents the energy associated with each unit of charge is

  • Charge
  • Current
  • Resistance
  • Voltage

Question 5)
Power is equal to voltage multiplied by current.

  • True
  • False

Question 6)
Ohm’s Law states that voltage equals current multiplied by

  • Power
  • Energy
  • Resistance
  • Charge

Question 7)
DC current moves in one direction through a conductor while AC current oscillates back and forth.

  • True
  • False

Question 8)
In an electric circuit, energy get transmitted instantaneously from one end of a circuit to the other.

  • True
  • False

Question 9)
Which variable is fixed at an electric outlet?

  • Voltage
  • Power
  • Current
  • Resistance

Question 10)
An electric generator with a constant power output of 1 MW (i.e. a million Watts) produces 1 MWh in 1 hour.

  • True
  • False

Generation

Question 1)
Electricity can be produced in a conducting wire when it is exposed to a changing magnetic field.

  • True
  • False

Question 2)
Which of the following is not a thermoelectric power plant?

  • Natural gas plant
  • Hydro plant
  • Nuclear plant
  • Coal plant

Question 3)
A combined cycle plant burns two different types of fuel.

  • True
  • False

Question 4)
Which type of power plant typically has a low efficiency but high capacity factor?

  • Nuclear plant
  • Wind “farm”
  • Natural gas combustion turbine
  • Solar photovoltaic “farm”

Question 5)
Heat rate is a measure of a power plant’s

  • Output
  • Capacity
  • Efficiency
  • Power

Question 6)
When electricity is induced in a conducting wire, a (secondary) magnetic field is induced by the electricity moving through the wire.

  • True
  • False

Question 7)
What type of current does an electromagnetic generator generally produce?

  • AC
  • Low wattage
  • High voltage
  • DC

Question 8)
Which type of capacity is assigned to a power plant by its manufacturer?

  • Winter
  • Factor
  • Nameplate
  • Summer

Transmission & Distribution

Question 1)
The electric industry relies on DC current transformers because they are less expensive than AC transformers.

  • True
  • False

Question 2)
A step-up transformer has more wire wraps on outgoing wire side.

  • True
  • False

Question 3)
Reactive power produced in a transformer _______ the power coming into the transformer. (Fill in the blank)

  • has no effect on
  • transforms
  • reduces
  • increases

Question 4)
What is the frequency in Hertz (Hz) of AC current here in the U.S.?

  • 33
  • 80
  • 120
  • 60

Question 5)
In power line loss, which of the following is not constant from one end of a power line to the other?

  • Ground
  • Voltage
  • Current
  • Resistance

Question 6)
Which of the following is used to distribute electricity to multiple power lines?

  • Bus Bar
  • Three phase current
  • Transformer
  • Ground line

Question 7)
Three-phase current is the most economic way of delivering near constant electric power.

  • True
  • False

Question 8)
Power line loss increases linearly with current.

  • True
  • False

Load

Question 1)
What does not determine the amount of current drawn by an appliance that is plugged into a home outlet?

  • The appliance resistance
  • Whether the appliance is on or off
  • The output of a power plant
  • The outlet voltage

Question 2)
The electric current passing out of and back into an outlet is the same in both the hot and neutral lines attached to the outlet.

  • True
  • False

Question 3)
A surge in what will cause an electric fuse to “blow out” or switch off?

  • Resistance
  • Current
  • Charge
  • Voltage

Question 4)
A spinning electric generator will ________ if too large a load (i.e. electrical resistance) is attached to it. (Fill in the blank)

  • Explode
  • Slow
  • Speed up
  • Reverse

Question 5)
In order to produce more electricity to meet greater electric loads, the electromagnetic generator of a thermoelectric power plant has to consume more energy to maintain the same spin rate and thus produce AC current at the same frequency .

  • True
  • False

Question 6)
Which is not yet a major electricity consuming sector?

  • Commercial
  • Industrial
  • Residential
  • Transportation

Question 7)
Electricity consumption is lowest at night.

  • True
  • False

Question 8)
What is NOT true of residential consumers of electricity?

  • Their consumption is constant throughout the day.
  • They require the greatest individual service.
  • They are the most numerous.
  • They require the greatest emergency backup service.

 

Electric Industry Operations and Markets
Week 2 Quiz Answers

 

System Management

Question 1)
Electricity, like crude oil, is stored in large enough quantities so as to meet national demand on an emergency basis.

  • True
  • False

Question 2)
System operators perform all but one of the following functions. Which is it?

  • Schedule backup generation
  • Operate individual power plants
  • Repair the grid in case of a problem
  • Minimize generation & transmission costs

Question 3)
A plant’s operational flexibility is governed by its minimum run time and its ramp rate.

  • True
  • False

Question 4)
Which type of power plant is typically deployed to help meet the minimum level of electricity demand over 24 hours?

  • Nuclear
  • Pumped hydro plant
  • Natural gas combined cycle
  • Natural gas combustion turbine

Question 5)
Levelized Cost of Electricity (or LCOE) allows for comparison of overall costs for different types of power plants.

  • True
  • False

Question 6)
Calculation of which of the following requires knowing what a non-renewable thermoelectric power plant’s heat rate is?

  • Fuel cost
  • Discount rate
  • Capital cost
  • Operations & maintenance cost

Question 7)
Some 50-60% of the price of electricity in the U.S. typically is for the cost of transmission & distribution.

  • True
  • False

Question 8)
In time of day pricing for electricity, rates vary depending on when electricity is consumed.

  • True
  • False

Question 9)
If electricity demand exceeds local supply, the system operator may do any of the following Except…

  • Let the situation play out
  • Implement a rolling black out
  • Call on certain customers to cut back demand
  • Wheel in power from an adjacent grid

Regulation

Question 1)
In the U.S., the Federal Energy Regulatory Commission (FERC) regulates interstate transmission.

  • True
  • False

Question 2
Theoretically, a natural monopoly can produce its goods and services the most inexpensively.

  • True
  • False

Question 3
Natural monopolies need to be regulated because they will tend to…

  • collude with other firms in the industry to fix prices.
  • circumvent the law.
  • charge a high price that maximizes profit.
  • invest in unneeded generation and transmission infrastructure.

Question 4
State Public Utility Commissions set the prices charged by regulated utilities while granting them a local market monopoly and a “reasonable” rate of return on their investments.

  • True
  • False

Question 5
All But which of the following is a major Federal law or “Act” that has affected the U.S. electric industry:

  • The Montreal Protocol on Substances Depleting the Ozone Layer of 1987
  • The Clean Air Acts of 1978 and 1990
  • The Public Utilities Regulatory Policies Act (PURPA) of 1978
  • The Public Utility Holding Company Act (PUHCA) of 1935

Question 6
The amount and types of regulations in the U.S. vary from State to State in part because of:

  • The Northeast Blackout of 2003
  • The California Energy Crisis of 2000-2001
  • The Edison-Westinghouse “Current Wars” of the 1890s
  • The Endangered Species Act of 1973

Question 7
One way that Electric Holding Company Monopolies were broken was by municipalities creating their own utilities.

  • True
  • False

Question 8
The second period of electric industry regulation largely focused on reducing environmental impacts and lowering price by increasing competition.

  • True
  • False

Markets

Question 1)
A traditional, vertically integrated and regulated utility focuses on…

  • Maximizing efficiency
  • Minimizing price
  • Growing market share
  • Reliability

Question 2)
Since PURPA, system operators of even regulated utilities must now factor in the availability of independent power producers.

  • True
  • False

Question 3)
In a competitive wholesale and retail electric market, transmission & distribution continues to be regulated.

  • True
  • False

Question 4)
In ideal economic dispatch, a system operator orders the dispatch of power plants based on…

  • the selling price bid by the plant operators .
  • plant preferences specified by the Public Utility Commission.
  • the power output bid by the plant operators.
  • the reliability of each plant based on past history.

Question 5)
In ideal economic dispatch, the bid of the first plant dispatched sets the wholesale price of electricity for that hour.

  • True
  • False

Question 6)
In actual dispatch, must-run plants (e.g. some nuclear plants) have to be dispatched even if they are not the lowest price.

  • True
  • False

Question 7)
Another situation in which a higher cost plant may be dispatched before a lower cost plant is if the former…

  • is newer.
  • has a faster ramp rate.
  • has lower capital costs.
  • produces lower CO2 emissions.

Question 8)
Of the costs of a power plant, which is the one that the plant operator will base the price of their bid on to be dispatched?

  • The capital costs
  • The variable operation & maintenance costs
  • The fixed operation & maintenance costs
  • The plant’s levelized cost of electricity

Question 9)
A system operator may dispatch a very high cost local plant to generate electricity within part of the grid because of transmission constraints.

  • True
  • False

Question 10)
In a purely competitive market, the Independent System Operator (ISO) dispatches generation and transmission based solely on accommodating unilateral trades which benefit buyers of electricity.

  • True
  • False

External Market Forces

Question 1)
U.S. shale gas production has lowered natural gas prices so much that many natural gas plants have become cheaper to dispatch than coal fired plants.

  • True
  • False

Question 2
During 2012, low natural gas prices forced many coal plant operators to try and run their plants as what type of plant?

  • Peaking
  • Load following
  • Baseload
  • Backup

Question 3)
Falling costs for renewable energy is among the significant reasons for growth in demand for renewable energy.

  • True
  • False

Question 4)
The regulatory agency that enforces the Clean Air Act is the Federal Energy Regulatory Commission (FERC)

  • True
  • False

Question 5)
Of the criteria pollutants emitted by power plants and regulated by the EPA in 2015, the only one emitted by natural gas plants is…

  • Mercury
  • SO2
  • NOx
  • Particulate matter

Question 6)
As of 2015, the U.S. Federal Government had not yet imposed a nationwide Renewable Portfolio Standard (RPS).

  • True
  • False

Question 7)
In a Power Purchase Agreement (PPA) between a wind farm and a utility in a state with an RPS, the utility purchases all of the electricity produced by the wind farm plus all of the renewable energy credits (RECs) the wind farm generates.

  • True
  • False

Question 8)
Wind and solar plants typically get dispatched only after other types of energy generating plants.

  • True
  • False

Question 9)
Starting in 2014, the EPA began plans to regulate CO2 emissions from power plants.

  • True
  • False

 

 

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