Final Exam -4th Class Power
Engineering Unit A5: Introduction to
Plant Operations and the Environment
Questions and Answers 2025-2026
Updated.
What is thermal treatment of organic waste materials?
Select one:
a. heat under high temperatures to render them nontoxic
b. steam cracking under high temperatures to separate the compounds
c. blending in effluent ponds until they are at the same temperature
d. incineration - Answer d
When handling liquid waste, each liquid must be handled according to information found on
current:
Select one:
a. government websites
b. environmental documents
c. MSDS
d. Transport Canada paperwork - Answer c
The main purpose of settling ponds in power plant effluent streams is:
Select one:
a. to allow pH to normalize
b. increase turbidity
c. allow particulate matter to settle out of the water
d. decrease dissolved oxygen in the water - Answer c
Cooling towers in power plants:
Select one:
a. reduce or prevent thermal water pollution
,What are thermoclines?:
Select one:
a. thermally separated layres in a body of water
b. thermally stratified layres created by concentrated dissolved gases
c. layres of lethal heat zones within a lake
d. thermos vents emitting carbon dioxide - Answer a
Why does thermal pollution have a lethal effect on water life?:
Select one:
a. extra heat causes more water to evaporate in winter
b. keeps the water from freezing in winter
c. extra heat in water kills all organisms
d. warmer water has a lower ability to dissolve oxygen - Answer d
When contaminants make their way into groundwater it is known as:
Select one:
a. effluent contamination
b. groundwater erosion
c. leaching
d. impoundment - Answer c
How is waste ash disposed of in its dry state?:
Select one:
a. in landfills
b. melted and turned into gypsum
c. turned into potash
d. surface impoundments - Answer a
The main purpose of electrostatic precipitators in power plants is:
Select one:
a. to remove bottom ash from the flue gas
, Cyclone separators used to separate fly ash from flue gas are considered ____________
separators:
Select one:
a. filter
b. electrical
c. mechanical
d. initial - Answer c
In a power plant, FGD stands for:
Select one:
a. fuel gas desulphurization
b. fuel guard division
c. flue gas desulphurization
d. flue gas de-foamer - Answer c
The process of recovery of sulfur is done by which process?:
Select one:
a. FDP
b. SRU
c. SDP
d. FGD - Answer d
In facilities and on equipment that cannot be altered, how can harmful effects of noise be
controlled?:
Select one:
a. reducing the sound at the source
b. modifying the sound path
c. wearing hearing protection
d. all the listed items - Answer c
What would the expected hearing damage be at 85 dB exposure?:
Select one:
Engineering Unit A5: Introduction to
Plant Operations and the Environment
Questions and Answers 2025-2026
Updated.
What is thermal treatment of organic waste materials?
Select one:
a. heat under high temperatures to render them nontoxic
b. steam cracking under high temperatures to separate the compounds
c. blending in effluent ponds until they are at the same temperature
d. incineration - Answer d
When handling liquid waste, each liquid must be handled according to information found on
current:
Select one:
a. government websites
b. environmental documents
c. MSDS
d. Transport Canada paperwork - Answer c
The main purpose of settling ponds in power plant effluent streams is:
Select one:
a. to allow pH to normalize
b. increase turbidity
c. allow particulate matter to settle out of the water
d. decrease dissolved oxygen in the water - Answer c
Cooling towers in power plants:
Select one:
a. reduce or prevent thermal water pollution
,What are thermoclines?:
Select one:
a. thermally separated layres in a body of water
b. thermally stratified layres created by concentrated dissolved gases
c. layres of lethal heat zones within a lake
d. thermos vents emitting carbon dioxide - Answer a
Why does thermal pollution have a lethal effect on water life?:
Select one:
a. extra heat causes more water to evaporate in winter
b. keeps the water from freezing in winter
c. extra heat in water kills all organisms
d. warmer water has a lower ability to dissolve oxygen - Answer d
When contaminants make their way into groundwater it is known as:
Select one:
a. effluent contamination
b. groundwater erosion
c. leaching
d. impoundment - Answer c
How is waste ash disposed of in its dry state?:
Select one:
a. in landfills
b. melted and turned into gypsum
c. turned into potash
d. surface impoundments - Answer a
The main purpose of electrostatic precipitators in power plants is:
Select one:
a. to remove bottom ash from the flue gas
, Cyclone separators used to separate fly ash from flue gas are considered ____________
separators:
Select one:
a. filter
b. electrical
c. mechanical
d. initial - Answer c
In a power plant, FGD stands for:
Select one:
a. fuel gas desulphurization
b. fuel guard division
c. flue gas desulphurization
d. flue gas de-foamer - Answer c
The process of recovery of sulfur is done by which process?:
Select one:
a. FDP
b. SRU
c. SDP
d. FGD - Answer d
In facilities and on equipment that cannot be altered, how can harmful effects of noise be
controlled?:
Select one:
a. reducing the sound at the source
b. modifying the sound path
c. wearing hearing protection
d. all the listed items - Answer c
What would the expected hearing damage be at 85 dB exposure?:
Select one:
