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EGEE 101 Exam 2 Questions with Solutions
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Exam of 16 pages for the course EGEE at EGEE (EGEE 101 Exam 2)
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EGEE 101 Exam 2Electric power is measured in terms of voltage.
A) True
B) False - answerB) False
Feedback: Unit of electric power is Watts
Central distribution is more efficient than distributed generation for transmitting
electricity.
A) True
B) False - answerB) False
Which of the following primary energy resources contributes the most to the production
of electricity?
A) Nuclear
B) Hydroelectric
C) Natural gas
D) Coal - answerD) Coal
Feedback: Coal contributes to almost 52% of total electricity.
In a gas turbine power plant, which fuel is burned to run the turbine?
A) water
B) Petroleum
C) Coal
D) Natural gas - answerD) Natural Gas
A standard steam power plant is more efficient than Cogeneration.
A) True
B) False - answerB) False
High voltage transmission lines are used to carry electricity over long distances.
A) True
B) False - answerA) True
Wind turbine converts the kinetic energy of air into mechanical energy through the
rotation of blades.
A) True
B) False - answerA) True
Electricity can be generated from fossil fuels.
A) True
,B) False - answerA) True
Feedback: Fossil fuels such as coal or natural gas are used to generate electricity in
power plants. Chemical energy in fossil fuels is converted into electricity in these plants.
Distributed generation reduces the amount of energy lost in transmitting electricity, as
electricity is produced very near to the place where it is used.
A) True
B) False - answerA) True
Central distribution uses coal, nuclear, hydropower or gas powered plants to generate
and transmit electricity over long distances.
A) True
B) False - answerA) True
Electric current is a measure of flow of electric charge.
A) True
B) False - answerA) True
In a power plant, chemical energy is converted to what useful end product?
A) Mechanical energy
B) Electrical energy
C) Thermal energy
D) None of the above - answerB) Electrical energy
Feedback: Chemical Energy is converted into thermal energy in the boiler, which is then
converted to mechanical energy in the turbine followed by generation of electricity by
the generator.
In a nuclear power plant, nuclear reactions are used for converting water into steam.
A) True
B) False - answerA) True
Electrical energy is measured in terms of KWh
A) True
B) False - answerA) True
Which power plant uses both gas and steam turbine to produce electricity?
A) Combined cycle power plant
B) Cogeneration power plant
C) Hydroelectric power plant
D) Gas turbine power plant - answerA) Combined cycle power plant
What is the energy conversion that takes place in a turbine in a power plant?
A) Chemical energy to Thermal energy
B) Thermal energy to electricity
C) Thermal energy to mechanical energy
D) Mechanical energy to electricity - answerC) Thermal energy to mechanical energy
, Electric power is measured as
A) Velocity multiplied by time
B) Velocity multiplied by current
C) Voltage multiplied by current
D) None of the above - answerC) Voltage multiplied by current
A step-up transformer is used to decrease the voltage, so that electricity can be
transmitted over long distances.
A) True
B) False - answerB) False
What is the function of a generator in a power plant?
A) Convert chemical energy to mechanical energy
B) Convert mechanical energy to electrical energy
C) Convert thermal energy to mechanical energy
D) None of the above - answerB) Convert mechanical energy to electrical energy
Most of the electricity in the US is generated using nuclear energy.
A) True
B) False - answerB) False
Feedback: Coal is the major contributor (52%)
A Cogeneration power plant generates both electric power and useful thermal energy
from the same fuel source.
A) True
B) False - answerA) True
A step down transformer is used to decrease high voltage from transmission lines to low
voltage (110V) so it can be distributed to homes and businesses.
A) True
B) False - answerA) True
Which among the following does not use a generator to produce electricity?
A) Steam power plant
B) Photovoltaic cells
C) Hydroelectric power plant
D) Nuclear power plant - answerB) Photovoltaic cells
A generator works on the principle of electromagnetic induction.
A) True
B) False - answerA) True
Electricity can be generated using a magnetic field.
A) True
B) False - answerA) True
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