EGEE 101 – Exam 2 – Energy and Environmental Engineering – study material
A Cogeneration power plant generates both electric power and useful thermal energy from the same
fuel source.
A) True
B) False - ANS ✔✔A) True
Central distribution is more efficient than distributed generation for transmitting electricity.
A) True
B) False - ANS ✔✔B) False
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 - ANS ✔✔B) Photovoltaic cells
In a nuclear power plant, nuclear reactions are used for converting water into steam.
A) True
B) False - ANS ✔✔A) True
Electric power is measured in terms of voltage.
A) True
B) False - ANS ✔✔B) False- unit of electric power is Watts
Wind turbine converts the kinetic energy of air into mechanical energy through the rotation of blades.
A) True
B) False - ANS ✔✔A) True
,Electrical energy is measured in terms of KWh
A) True
B) False - ANS ✔✔A) True
A step-up transformer is used to decrease the voltage, so that electricity can be transmitted over long
distances.
A) True
B) False - ANS ✔✔B) False
Central distribution uses coal, nuclear, hydropower or gas powered plants to generate and transmit
electricity over long distances.
A) True
B) False - ANS ✔✔A) True
Which power plant uses both gas and steam turbine to produce electricity?
A) Hydroelectric power plant
B) Combined cycle power plant
C) Cogeneration power plant
D) Gas turbine power plant - ANS ✔✔B) Combined cycle power plant
High voltage transmission lines are used to carry electricity over long distances.
A) True
B) False - ANS ✔✔A) True
Electricity can be generated from fossil fuels.
A) True
B) False - ANS ✔✔A) True- 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.
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 - ANS ✔✔B) Electrical energy- 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.
A generator works on the principle of electromagnetic induction.
A) True
B) False - ANS ✔✔A) True
What is the energy conversion that takes place in a turbine in a power plant?
A) Chemical energy to Thermal energy
B) Mechanical energy to electricity
C) Thermal energy to mechanical energy
D) Thermal energy to electricity - ANS ✔✔C) Thermal energy to mechanical energy
Electric current is a measure of flow of electric charge.
A) True
B) False - ANS ✔✔A) True
In a gas turbine power plant, which fuel is burned to run the turbine?
A) Petroleum
B) Coal
C) Natural gas
D) water - ANS ✔✔C) Natural gas
Electricity can be generated using a magnetic field.
A) True
A Cogeneration power plant generates both electric power and useful thermal energy from the same
fuel source.
A) True
B) False - ANS ✔✔A) True
Central distribution is more efficient than distributed generation for transmitting electricity.
A) True
B) False - ANS ✔✔B) False
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 - ANS ✔✔B) Photovoltaic cells
In a nuclear power plant, nuclear reactions are used for converting water into steam.
A) True
B) False - ANS ✔✔A) True
Electric power is measured in terms of voltage.
A) True
B) False - ANS ✔✔B) False- unit of electric power is Watts
Wind turbine converts the kinetic energy of air into mechanical energy through the rotation of blades.
A) True
B) False - ANS ✔✔A) True
,Electrical energy is measured in terms of KWh
A) True
B) False - ANS ✔✔A) True
A step-up transformer is used to decrease the voltage, so that electricity can be transmitted over long
distances.
A) True
B) False - ANS ✔✔B) False
Central distribution uses coal, nuclear, hydropower or gas powered plants to generate and transmit
electricity over long distances.
A) True
B) False - ANS ✔✔A) True
Which power plant uses both gas and steam turbine to produce electricity?
A) Hydroelectric power plant
B) Combined cycle power plant
C) Cogeneration power plant
D) Gas turbine power plant - ANS ✔✔B) Combined cycle power plant
High voltage transmission lines are used to carry electricity over long distances.
A) True
B) False - ANS ✔✔A) True
Electricity can be generated from fossil fuels.
A) True
B) False - ANS ✔✔A) True- 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.
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 - ANS ✔✔B) Electrical energy- 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.
A generator works on the principle of electromagnetic induction.
A) True
B) False - ANS ✔✔A) True
What is the energy conversion that takes place in a turbine in a power plant?
A) Chemical energy to Thermal energy
B) Mechanical energy to electricity
C) Thermal energy to mechanical energy
D) Thermal energy to electricity - ANS ✔✔C) Thermal energy to mechanical energy
Electric current is a measure of flow of electric charge.
A) True
B) False - ANS ✔✔A) True
In a gas turbine power plant, which fuel is burned to run the turbine?
A) Petroleum
B) Coal
C) Natural gas
D) water - ANS ✔✔C) Natural gas
Electricity can be generated using a magnetic field.
A) True
