Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Alternative Energy Systems > [L5]_Wind Turbine Systems > Flashcards

[L5]_Wind Turbine Systems Flashcards

1
Q

ENGY-775

How is the airflow over a wing affected by changes in angle of attack?

[L5]

A

The airflow over a wing can be affected by changes in the angle of attack, which can increase or decrease lift and affect the stability of an aircraft.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

ENGY-775

What is the name of the phenomenon that occurs when wind turbines in close proximity to each other can cause reduced efficiency and increased wear and tear?

[L5]

A

The phenomenon is called wind turbine wake or wake effect

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

ENGY-775

What is shadow flickering as it pertains to wind turbines?

[L5]

A

Wind turbine blades cast shadows on buildings, causing shadow flickering. These objects can flicker in sunlight, deceiving epileptics.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

ENGY-775

What are the three (3) types of wind cells per hemisphere?

[L5]

A
  • Hadley Cell
  • Ferrel Cell
  • Polar Cell

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

ENGY-775

What is the purpose of the gearbox in a wind turbine?

[L5]

A

The purpose of the gearbox in a wind turbine is to increase the rotational speed of the blades to a level that can generate electricity.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

ENGY-775

What is the name of the process that is used to monitor the structural health of wind turbines to prevent damage and ensure safety?

[L5]

A

The process is called structural health monitoring, which typically involves using sensors and other technologies to detect changes in the structural integrity of wind turbines over time.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

ENGY-775

What is the highest conventional theoretical efficiency for a wind turbine currently?

[L5]

A

59% Eff

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

ENGY-775

Which category of WECs were invented first throughout history?
* HAWTs
* VAWTs

[L5]

A

HAWTs started in the 12th century of western europe.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

ENGY-775

What is the name of the device that measures the speed and direction of the wind in a wind turbine?

[L5]

A

The device that measures the speed and direction of the wind in a wind turbine is called an anemometer.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

ENGY-775

What is the name of the process that is used to reduce the noise produced by wind turbines?

[L5]

A

The process is called noise mitigation, which may involve using specialized blade designs or installing sound barriers.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

ENGY-775

What is CFD?

[L5]

A

It is the process that is used to simulate the flow of air over a wing using computer modeling and simulation.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

ENGY-775

What is the maximum wind speed that a wind turbine can safely handle?

[L5]

A

The maximum wind speed that a wind turbine can handle is typically around 25 m/s, depending on the specific design and construction.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

ENGY-775

What is the name of the technology that is used to capture the energy from wind that is not directly hitting the turbine blades?

[L5]

A

The technology is called wind energy conversion system (WECS), which can capture energy from wind shear, wind turbulence, and other wind-related phenomena.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

ENGY-775

What is the name of the system that automatically shuts down a wind turbine if wind speeds exceed safe levels?

[L5]

A

The system that automatically shuts down a wind turbine if wind speeds exceed safe levels is called the overspeed protection system.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

ENGY-775

What is the name of the process that is used to optimize the positioning of wind turbines to maximize their power output?

[L5]

A

The process is called wind farm layout optimization, which involves using computer simulations and other tools to determine the most efficient placement of wind turbines.

[L5]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

ENGY-775

What is the difference between a horizontal-axis and vertical-axis wind turbine?

[L5]

A

A horizontal-axis wind turbine has blades that rotate around a horizontal axis, while a vertical-axis wind turbine has blades that rotate around a vertical axis.

[L5]

17
Q

ENGY-775

How does the shape of a wing affect its lift and drag characteristics?

[L5]

A

The shape of a wing can affect its lift and drag characteristics by changing the way that air flows over the wing, which can increase or decrease lift and drag.

[L5]

18
Q

ENGY-775

What is the name of the device that allows a wind turbine to automatically adjust the blade pitch angle based on wind conditions?

[L5]

A

The device is called a pitch actuator or pitch control mechanism.

[L5]

19
Q

ENGY-775

What is the minimum wind speed required to start a wind turbine?

[L5]

A

The minimum wind speed required to start a wind turbine is typically around 5 m/s.

[L5]

20
Q

ENGY-775

What is the typical lifespan of a wind turbine?

[L5]

A

The typical lifespan of a wind turbine is around 20-25 years, although this can vary depending on factors such as maintenance, usage, and location.

[L5]

21
Q

ENGY-775

Name of the process that is used to detect and repair damage to wind turbine blades before it becomes critical.

[L5]

A

The process is called non-destructive testing (NDT), which typically involves using ultrasonic, magnetic, or other techniques to inspect the internal structure of wind turbine blades.

[L5]

22
Q

ENGY-775

What is the name of the phenomenon that occurs when the airflow over a wing separates from the surface, causing a loss of lift and increase in drag?

[L5]

A

The phenomenon is called flow separation or boundary layer separation.

[L5]

23
Q

ENGY-775

What does TSR stand for?

[L5]

A

Tip Speed Ratio

[L5]

24
Q

ENGY-775

What is the name of the process that is used to balance the weight of wind turbine blades to prevent uneven wear and tear?

[L5]

A

The process is called blade balancing, which involves adjusting the weight of each blade to ensure that they all rotate at the same speed.

[L5]

25
Q

ENGY-775

Why does the aspect ratio of a foil affect its lift and drag characteristics?

[L5]

A

A foil’s aspect ratio is its span to its chord (distance from the leading edge to the trailing edge of the wing).Higher aspect ratios generate greater lift and induced drag with the same foil area.

[L5]

26
Q

ENGY-775

What is radar diffraction caused by wind turbines?

[L5]

A

Wind turbine diffraction can create a radar “blind spot” that makes it hard for air traffic controllers to track aircraft. Wind farm developers and radar operators can collaborate to identify and mitigate radar interference.

[L5]

27
Q

ENGY-775

Name of the process that is used to recycle and repurpose decommissioned wind turbines and their components.

[L5]

A

The process is called wind turbine recycling or wind turbine material reuse, which typically involves dismantling the wind turbines and separating the different components for recycling or repurposing.

[L5]

28
Q

ENGY-775

What is the name of the system that is used to remotely monitor and control wind turbines from a central location?

[L5]

A

The system is called a supervisory control and data acquisition (SCADA) system.

[L5]

29
Q

ENGY-775

What is the name of the device that is used to measure the power output of a wind turbine?

[L5]

A

The device is called a power meter.

[L5]

30
Q

ENGY-775

List the four (4) types of historic WECS used as the precursors to wind turbines?

[L5]

A
  1. Screened Windmills
  2. Clapper Windmills
  3. Cyclical Pivoting Sail Windmills
  4. Cup Type Windmills

[L5]

Alternative Energy Systems (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions