EGEE 101 PSU - Q02 UPDATED
ACTUAL Exam Questions and
CORRECT Answers
In the last 5 years there has been a rapid change in the contribution of energy sources to the US
energy mix. The fuel that has lost the most market share is [answer] and the bulk of the
replacement was by [answer]. - CORRECT ANSWER - coal;
natural gas
There are a couple of "new" coal-fired electricity generation technologies that are much cleaner
and more CO2 sequestration ready than current plants. One is oxy-fuel combustion and the other
is - CORRECT ANSWER - gasification
Why did we use large amounts of fossil fuel and nuclear derived electricity when renewable
energy was available? - CORRECT ANSWER - it was much cheaper
Place these in the correct order
[steam power plant cycle diagram] - CORRECT ANSWER - highest efficiency- ultra
supercritical steam cycle
high efficiency- supercritical steam cycle
lower efficiency- steam cycle
Why are power plants often on river banks or the edge of lakes? - CORRECT ANSWER - for
a large supply of cooling water is needed
Which fossil fuel once contributed a great deal to electricity generation in the 1970s (US) but is
only ~1% derived now? - CORRECT ANSWER - petroleum and its derived-fuels
In 2016 there was a change in the contribution of fuel sources to electricity. What became the
leading fossil fuel? - CORRECT ANSWER - natural gas
ACTUAL Exam Questions and
CORRECT Answers
In the last 5 years there has been a rapid change in the contribution of energy sources to the US
energy mix. The fuel that has lost the most market share is [answer] and the bulk of the
replacement was by [answer]. - CORRECT ANSWER - coal;
natural gas
There are a couple of "new" coal-fired electricity generation technologies that are much cleaner
and more CO2 sequestration ready than current plants. One is oxy-fuel combustion and the other
is - CORRECT ANSWER - gasification
Why did we use large amounts of fossil fuel and nuclear derived electricity when renewable
energy was available? - CORRECT ANSWER - it was much cheaper
Place these in the correct order
[steam power plant cycle diagram] - CORRECT ANSWER - highest efficiency- ultra
supercritical steam cycle
high efficiency- supercritical steam cycle
lower efficiency- steam cycle
Why are power plants often on river banks or the edge of lakes? - CORRECT ANSWER - for
a large supply of cooling water is needed
Which fossil fuel once contributed a great deal to electricity generation in the 1970s (US) but is
only ~1% derived now? - CORRECT ANSWER - petroleum and its derived-fuels
In 2016 there was a change in the contribution of fuel sources to electricity. What became the
leading fossil fuel? - CORRECT ANSWER - natural gas
