Power Engineering 4th Class - Unit A5
Review 2025 Questions and Answers
What determines how much ash a combustion process produces?
Select one:
a. how long the fuel has been in storage
b. how the fuel is prepared
c. the type of fuel
d. how the fuel is burned - CORRECT ANSWER✔️✔️-c
(4-040-1.1) The earth's water cycle is referred to as the:
Select one:
a. hydrostatic cycle
b. meteorological cycle
c. hydrographic cycle
d. hydrological cycle - CORRECT ANSWER✔️✔️-d
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,If noise can't be reduced to safe levels by getting a quieter machine or by using sound absorbing
materials around it, what can be done?
Select one:
a. Use hearing protection
b. Restrict access to the machine
c. Move the equipment so that the noise isn't a concern
d. Re-engineer the equipment - CORRECT ANSWER✔️✔️-a
By doing this, waste disposal can be made to be more effective.
Select one:
a. Treat the waste
b. Evaporate the waste
c. Isolate the waste
d. Dilute the waste - CORRECT ANSWER✔️✔️-a
What is the significance of the term "Global Warming Potential"?
Select one:
a. The Global Warming Potential scale is a sliding scale that determines which greenhouse gas
currently is the most damaging.
b. Global Warming Potential predicts the ability of newly formed gases to harm Earth's atmosphere.
c. Global Warming Potential differentiates pollutants between hazardous and non-hazardous gases.
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,d. It is a way of ranking a greenhouse gas' potential to affect the Earth - CORRECT
ANSWER✔️✔️-d
Carbon can find its way into rock via:
Select one:
a. decaying plant matter
b. groundwater
c. the formation of sedimentary rocks
d. carbon dioxide carrying precipitation - CORRECT ANSWER✔️✔️-c
Squirrels are herbivores and are also part of the food web. When a squirrel dies, what happens next?
Select one:
a. Decomposers break it down into its basic elements
b. carbon dioxide is released
c. there is a net gain in matter in the soil
d. energy is released - CORRECT ANSWER✔️✔️-a
Industrial stack emissions are:
Select one:
a. reflective of the type of fuel being burned
b. not a concern of jurisdictions
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, c. predominantly carbon dioxide
d. can be eliminated by proper fuel burning equipment - CORRECT ANSWER✔️✔️-a
(4-040-2.3) Energy in the food web:
Select one:
a. Originates from the sun
b. Travels from the top of the web to the bottom
c. Does not leave the web
d. Is passed through the food web by heat radiation - CORRECT ANSWER✔️✔️-a
What is an example of an unplanned impact that a plant may have on the environment?
Select one:
a. airborne particulate released to atmosphere
b. solid waste disposal
c. normal stack emissions
d. hazardous liquids leaking into groundwater - CORRECT ANSWER✔️✔️-d
(4-042-2.1) The voltage supplied to electrostatic precipitators is in the range of ____________ volts
_____..
Select one:
a. 10 000 - 1 000 000 DC
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 4
Review 2025 Questions and Answers
What determines how much ash a combustion process produces?
Select one:
a. how long the fuel has been in storage
b. how the fuel is prepared
c. the type of fuel
d. how the fuel is burned - CORRECT ANSWER✔️✔️-c
(4-040-1.1) The earth's water cycle is referred to as the:
Select one:
a. hydrostatic cycle
b. meteorological cycle
c. hydrographic cycle
d. hydrological cycle - CORRECT ANSWER✔️✔️-d
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,If noise can't be reduced to safe levels by getting a quieter machine or by using sound absorbing
materials around it, what can be done?
Select one:
a. Use hearing protection
b. Restrict access to the machine
c. Move the equipment so that the noise isn't a concern
d. Re-engineer the equipment - CORRECT ANSWER✔️✔️-a
By doing this, waste disposal can be made to be more effective.
Select one:
a. Treat the waste
b. Evaporate the waste
c. Isolate the waste
d. Dilute the waste - CORRECT ANSWER✔️✔️-a
What is the significance of the term "Global Warming Potential"?
Select one:
a. The Global Warming Potential scale is a sliding scale that determines which greenhouse gas
currently is the most damaging.
b. Global Warming Potential predicts the ability of newly formed gases to harm Earth's atmosphere.
c. Global Warming Potential differentiates pollutants between hazardous and non-hazardous gases.
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
,d. It is a way of ranking a greenhouse gas' potential to affect the Earth - CORRECT
ANSWER✔️✔️-d
Carbon can find its way into rock via:
Select one:
a. decaying plant matter
b. groundwater
c. the formation of sedimentary rocks
d. carbon dioxide carrying precipitation - CORRECT ANSWER✔️✔️-c
Squirrels are herbivores and are also part of the food web. When a squirrel dies, what happens next?
Select one:
a. Decomposers break it down into its basic elements
b. carbon dioxide is released
c. there is a net gain in matter in the soil
d. energy is released - CORRECT ANSWER✔️✔️-a
Industrial stack emissions are:
Select one:
a. reflective of the type of fuel being burned
b. not a concern of jurisdictions
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
, c. predominantly carbon dioxide
d. can be eliminated by proper fuel burning equipment - CORRECT ANSWER✔️✔️-a
(4-040-2.3) Energy in the food web:
Select one:
a. Originates from the sun
b. Travels from the top of the web to the bottom
c. Does not leave the web
d. Is passed through the food web by heat radiation - CORRECT ANSWER✔️✔️-a
What is an example of an unplanned impact that a plant may have on the environment?
Select one:
a. airborne particulate released to atmosphere
b. solid waste disposal
c. normal stack emissions
d. hazardous liquids leaking into groundwater - CORRECT ANSWER✔️✔️-d
(4-042-2.1) The voltage supplied to electrostatic precipitators is in the range of ____________ volts
_____..
Select one:
a. 10 000 - 1 000 000 DC
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 4
