Q91. What is the primary limitation of widespread adoption of geothermal energy?
a) Limited availability
b) High installation costs
c) Environmental concerns
d) Technological complexity
Show Answer
Correct Answer: a) Limited availability
Explanation: Geothermal energy resources are not evenly distributed globally, and suitable geothermal sites may be limited in certain regions. Additionally, accessing deep geothermal reservoirs can be costly and technically challenging, further limiting widespread adoption.
Q92. Which type of geothermal energy system uses hot water or steam from underground reservoirs to drive turbines directly?
a) Binary cycle
b) Dry steam
c) Flash steam
d) Enhanced geothermal systems
Show Answer
Correct Answer: c) Flash steam
Explanation: Flash steam geothermal power plants utilize hot water or steam from underground reservoirs to drive turbines directly, without the need for additional heat exchange processes. The hot fluid is released from pressure, causing it to “flash” into steam, which is then used to generate electricity.
Q93. What is the term for the process of re-injecting geothermal fluids into the reservoir after heat extraction?
a) Replenishment
b) Conservation
c) Reclamation
d) Reinjection
Show Answer
Correct Answer: d) Reinjection
Explanation: Reinjection is the process of returning geothermal fluids, such as water or brine, back into the underground reservoir after heat extraction. This helps maintain reservoir pressure and sustainability by replenishing the fluid volume and minimizing environmental impacts.
Q94. Which sector is a significant consumer of direct-use geothermal energy?
a) Transportation
b) Industrial
c) Residential
d) Agriculture
Show Answer
Correct Answer: c) Residential
Explanation: Direct-use geothermal energy is commonly used for residential heating and cooling applications, such as space heating, water heating, and greenhouse climate control. It provides a renewable and efficient alternative to traditional heating and cooling systems.
Q95. What is the primary advantage of using geothermal energy for electricity generation?
a) Low emissions
b) High energy density
c) Scalability
d) Cost competitiveness
Show Answer
Correct Answer: a) Low emissions
Explanation: Geothermal energy offers the advantage of low greenhouse gas emissions compared to fossil fuel-based power generation. Geothermal power plants produce minimal air pollutants and greenhouse gases, contributing to cleaner and more sustainable electricity generation.