Solar Thermal System for Heating Parabolic Trough Power Plant

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What is the shape of the parabolic mirrors used in solar fields?

U-shaped (correct)
Circular
Rectangular
Triangular

What is the purpose of the receiver pipe in a solar thermal system?

To reflect sunlight onto the mirrors
To generate electricity
To store thermal energy
To heat the fluid in the pipe (correct)

How does the efficiency of a solar thermal power plant depend on the collector field and steam-cycle efficiencies?

It is the product of the collector field and steam-cycle efficiencies (correct)
It is the ratio of the collector field and steam-cycle efficiencies
It is the difference of the collector field and steam-cycle efficiencies
It is the sum of the collector field and steam-cycle efficiencies

What is the maximum collector efficiency that can be reached in solar thermal trough systems?

75% (D) Signup and view all the answers

What is the purpose of thermal storage systems in solar thermal power plants?

To store thermal energy for later use (A) Signup and view all the answers

What is the temperature of the water heated in a Direct Steam Power Tower?

~540°C (A) Signup and view all the answers

What is the primary outcome of harvesting wind by modern wind turbines?

Electricity (C) Signup and view all the answers

What is the term used to describe the process of generating electricity from wind?

Wind Generation (B) Signup and view all the answers

What is the main characteristic of wind energy?

It is a non-degraded renewable energy source (A) Signup and view all the answers

What is the primary component of a wind turbine that converts wind energy into mechanical power?

Blades (B) Signup and view all the answers

What is the main driving force behind air movement?

Difference in air pressure (D) Signup and view all the answers

What is the term used to describe the study of the interactions between solar radiation, evaporation, cloud cover, and surface roughness?

Meteorology (A) Signup and view all the answers

What is the primary function of filters in cooling systems of wind turbines?

To prevent blockages due to dirt and debris (D) Signup and view all the answers

What is the purpose of the electrical system in a wind turbine?

To convert mechanical energy into electrical energy (D) Signup and view all the answers

What is the role of fan maintenance in wind turbines?

To circulate air effectively through the turbine (C) Signup and view all the answers

What is the purpose of fluid changes in cooling systems of wind turbines?

To ensure the correct properties of the coolant (A) Signup and view all the answers

What is the primary function of the braking system in a wind turbine?

To prevent damage to the tower or other structures in the event of a catastrophic failure (C) Signup and view all the answers

What is the purpose of the braking system in a wind turbine?

To regulate the rotational speed of the turbine (A) Signup and view all the answers

What component of the electrical system is responsible for transforming mechanical energy into electrical energy?

Generator (C) Signup and view all the answers

What is the purpose of inspecting brakes and brake pads?

To identify damage or wear that can cause system failure (A) Signup and view all the answers

What type of brake uses a magnetic field to slow down the turbine's rotor blades?

Electrical braking system (D) Signup and view all the answers

What is the function of the yaw control in a wind turbine?

To keep the rotor facing the wind (B) Signup and view all the answers

Why is it important to record maintenance and inspection records?

To allow for a comprehensive analysis of the braking system's performance and history (A) Signup and view all the answers

What is the purpose of blade pitch control?

To optimize the aerodynamic efficiency of the rotor (B) Signup and view all the answers

What is the primary function of pumps in hydraulic systems?

To provide hydraulic fluid to the system at the required pressure levels (A) Signup and view all the answers

What is the purpose of actuators in hydraulic systems?

To convert hydraulic pressure into mechanical motion (C) Signup and view all the answers

What should be done to prevent failure in hydraulic systems?

Replace worn or damaged components immediately (A) Signup and view all the answers

What is the purpose of valves in hydraulic systems?

To control the flow of hydraulic fluid (C) Signup and view all the answers

What should be done to hydraulic fluid contaminated with water, dirt, or other particles?

Replace the fluid immediately (D) Signup and view all the answers

What is the importance of regular inspection of hydraulic system components?

To identify and replace worn or damaged components (A) Signup and view all the answers