Geothermal Power Plants: Harnessing Earth's Heat for Electricity

Question 1

Which of the following is NOT a type of geothermal power plant?

Accepted Answer

Coal-fired

Answer

Dry steam

Answer

Flash steam

Answer

Binary cycle

Question 2

What is the primary fluid used in a binary cycle geothermal power plant?

Accepted Answer

Organic fluid

Answer

Water

Answer

Steam

Answer

Air

Question 3

Which component of a geothermal power plant converts mechanical energy into electrical energy?

Accepted Answer

Generator

Answer

Turbine

Answer

Condenser

Answer

Heat exchanger

Question 4

Which type of geothermal power plant utilizes a technology to extract heat from hot rocks that are not naturally fractured?

Accepted Answer

Enhanced geothermal systems

Answer

Dry steam

Answer

Flash steam

Answer

Binary cycle

Question 5

Which type of geothermal power plant utilizes an organic fluid as its working fluid?

Accepted Answer

Binary cycle power plant

Answer

Dry steam power plant

Answer

Single flash power plant

Answer

Hybrid power plant

Question 6

What is the key advantage of incorporating binary cycle technology in geothermal power plants?

Accepted Answer

Enhanced efficiency, particularly at lower temperatures

Answer

Reduced corrosion and scaling issues

Answer

Lower operating pressure requirements

Answer

Improved environmental impact

Question 7

Which disadvantage is commonly associated with dry steam geothermal power plants?

Accepted Answer

Limited availability of dry steam resources

Answer

Increased risk of silica deposition

Answer

Reduced efficiency at lower temperatures

Answer

High operating and maintenance costs

Question 8

What is the primary function of a heat exchanger within a geothermal power plant?

Accepted Answer

Facilitating heat transfer from geothermal fluid to the working fluid

Answer

Condensing the working fluid after turbine expansion

Answer

Cooling the geothermal fluid prior to reinjection

Answer

Separating gases from the geothermal fluid

Question 9

A primary advantage of geothermal energy relative to other renewable sources like solar and wind is its:

Accepted Answer

High reliability and predictable power output

Answer

Absence of carbon dioxide emissions during operation

Answer

Minimal maintenance requirements and extended lifespan

Answer

Extremely high energy density compared to other sources

Question 10

In a binary cycle geothermal power plant, the heat exchanger serves the primary function of:

Accepted Answer

Transferring heat from the geothermal fluid to a secondary working fluid with a lower boiling point

Answer

Converting mechanical energy generated by the turbine into electrical energy

Answer

Condensing the steam produced by the geothermal fluid to generate electricity

Answer

Removing impurities and dissolved solids from the geothermal fluid to prevent equipment damage

Question 11

The system designed to return cooled geothermal fluid back into the reservoir is known as the:

Accepted Answer

Reservoir recharge system

Answer

Closed-loop system

Answer

Heat recovery system

Answer

Steam collection system

Question 12

Which type of geothermal resource is characterized by the presence of hot, dry rocks with no associated hydrothermal fluids?

Accepted Answer

Enhanced geothermal system (EGS)

Answer

Hydrothermal

Answer

Geopressurized

Answer

Magma

Question 13

To generate electricity efficiently from a geothermal reservoir, the temperature of the geothermal fluid should ideally be around:

Accepted Answer

250-300 degrees Celsius

Answer

50-100 degrees Celsius

Answer

150-200 degrees Celsius

Answer

350-400 degrees Celsius

Question 14

The component responsible for converting thermal energy from the geothermal fluid into mechanical energy in a geothermal power plant is the:

Accepted Answer

Turbine

Answer

Generator

Answer

Condenser

Answer

Pump

Question 15

The primary source of energy harnessed by geothermal power plants is the:

Accepted Answer

Heat from the Earth's core

Answer

Solar radiation

Answer

Wind

Answer

Fossil fuels

Question 16

Which type of geothermal power plant is suitable for utilizing low-temperature geothermal resources (below 200°C)?

Accepted Answer

Binary cycle

Answer

Dry steam

Answer

Flash steam

Answer

Hybrid

Question 17

What is the primary purpose of a condenser in a geothermal power plant?

Accepted Answer

To convert steam back into liquid water

Answer

To heat the working fluid

Answer

To generate electricity

Answer

To separate geothermal fluids

Question 18

What is the most significant environmental concern associated with geothermal power plants?

Accepted Answer

Land subsidence and geological instability

Answer

Greenhouse gas emissions and air pollution

Answer

Water pollution and contamination of water sources

Answer

Noise pollution and disturbance to wildlife

Question 19

What is the fundamental principle behind the binary cycle technology employed in geothermal power plants?

Accepted Answer

Utilizing a secondary fluid with a lower boiling point than water

Answer

Extracting heat from high-temperature steam directly

Answer

Generating electricity directly from geothermal fluids

Answer

Storing thermal energy for later use

Question 20

Which of the following is NOT a different type of geothermal power plant?

Accepted Answer

Hydroelectric

Answer

Dry steam

Answer

Flash evaporation

Answer

Binary cycle

Question 21

What is the main disadvantage associated with dry steam geothermal power plants?

Accepted Answer

Limited availability of dry steam resources

Answer

High maintenance and operating costs

Answer

Environmental impact and potential for pollution

Answer

Technical difficulties in harnessing dry steam in certain geological regions