Which energy source is used in tidal power plants to generate electricity?
A Sunlight
B Wind
C Water pressure
D Ocean tides
Tidal power plants generate electricity by harnessing the movement of ocean tides. The gravitational pull of the moon causes regular tidal movements, which are captured by turbines to produce electrical power. Tidal energy is a predictable and renewable source.
What is the primary factor that makes wave energy generation possible?
A Tidal forces
B Ocean waves
C Water temperature
D Wind pressure
Wave energy generation relies on the movement of ocean waves. The kinetic energy of the waves is captured by specially designed devices, which convert it into mechanical energy, which is then transformed into electricity.
Which power generation method combines both gas and steam turbines?
A Combined cycle
B Biomass
C Wind
D Hydropower
A combined cycle power plant uses both gas and steam turbines to improve efficiency. The gas turbine produces electricity, and its exhaust heat is used to generate steam that drives a second turbine, increasing the overall power generation efficiency.
What type of power plant typically uses a combination of two energy cycles?
A Geothermal
B Tidal
C Combined cycle
D Solar
Combined cycle power plants use a combination of gas and steam cycles. The gas turbine generates electricity, and the waste heat is used to produce steam for a steam turbine. This combined process significantly boosts overall plant efficiency.
What is the main advantage of a combined cycle power plant?
A Low cost
B Higher efficiency
C Renewable energy
D Low emissions
The main advantage of a combined cycle power plant is its higher efficiency. By utilizing both gas and steam turbines, the plant maximizes the use of energy, turning waste heat into additional power generation, thus improving overall efficiency.
What is typically used to capture wave energy?
A Batteries
B Windmills
C Solar panels
D Buoys
Buoys are commonly used to capture wave energy. They float on the surface of the ocean and move with the waves. This motion is converted into mechanical energy and used to generate electricity via an attached generator.
Which of the following energy sources relies on the gravitational pull of the moon?
A Biomass
B Tidal
C Solar
D Wind
Tidal energy generation is based on the gravitational pull of the moon and the sun, which causes ocean tides. These tidal movements are harnessed by turbines to generate electricity, making tidal energy both renewable and predictable.
Which of the following methods uses the rise and fall of tides to produce electricity?
A Solar power
B Wind energy
C Tidal energy
D Geothermal
Tidal energy uses the rise and fall of ocean tides, which are caused by the gravitational forces of the moon. This movement is captured by turbines that generate electricity. Tidal energy is highly predictable and renewable.
What is the energy conversion process in a wave energy plant?
A Thermal to mechanical
B Wind to mechanical
C Chemical to electrical
D Mechanical to electrical
In wave energy plants, the mechanical energy from the movement of waves is converted into electrical energy. Specialized devices, such as oscillating water columns or buoys, capture the mechanical energy, which is then transformed into electricity.
Which of the following systems is used to increase efficiency in power generation?
A Wind turbines
B Combined cycle
C Solar panels
D Hydroelectric
Combined cycle systems enhance power generation efficiency by using both gas and steam turbines. The exhaust heat from the gas turbine is used to generate steam for a second turbine, which improves the plant’s overall energy conversion.
Which energy source can be used to generate electricity by using underwater turbines?
A Solar energy
B Geothermal energy
C Tidal energy
D Wind energy
Underwater turbines are used to capture tidal energy, where the movement of ocean water due to tides drives the turbines. These turbines convert the mechanical energy from tidal flows into electrical energy.
What is the role of the generator in a combined cycle power plant?
A Pump water
B Store electricity
C Cool down the system
D Convert mechanical energy to electricity
In a combined cycle power plant, the generator’s role is to convert the mechanical energy from the turbines into electricity. The gas turbine generates mechanical energy, and the steam turbine follows the same process, both driving the generator to produce electrical power.
Which type of energy is harnessed from the movement of the ocean’s surface?
A Geothermal energy
B Wave energy
C Solar energy
D Biomass energy
Wave energy harnesses the movement of ocean waves to generate electricity. Specialized devices convert the mechanical energy of the moving waves into electrical energy, providing a renewable source of power.
What type of power plants would typically require the use of both gas and steam turbines?
A Combined cycle
B Biomass
C Geothermal
D Hydropower
Combined cycle power plants use both gas turbines and steam turbines to maximize efficiency. The gas turbine generates electricity, while its waste heat is used to create steam, driving a steam turbine for additional electricity generation.
Which is the primary advantage of tidal energy over other renewable sources?
A Cost-effectiveness
B High efficiency
C Predictability
D Low emissions
Tidal energy has the advantage of predictability. Unlike wind and solar power, tidal energy is based on the gravitational pull of the moon and is predictable for long periods, ensuring a stable and reliable energy supply.