Wind Energy MCQs : This section focuses on the "Wind Energy" in Renewable Energy. These Multiple Choice Questions (MCQs) should be practiced to improve the Renewable Energy skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
A turbine converts the kinetic energy of the wind to useful ___________.
A. solar energy
B. electric energy
C. mechanical energy
D. chemical energy
Explanation: A turbine converts the kinetic energy of the wind to useful mechanical energy.
The wind turbines are largely classified into ________ types.
Explanation: The wind turbines are largely classified into two types- Horizontal Axis Wind Turbines and Vertical Axis Wind Turbines.
________ is change in wind direction, speed or the height at which the maximum velocity occurs.
Explanation: Wind shear : Shear is change in wind direction, speed or the height at which the maximum velocity occurs.
How many Wind speed distribution there?
Explanation: There are three distributions : Diurnal, Depressions and Annual.
Wind patterns are important and are often analyzed using a wind spectrum.
C. Can be true or false
D. Can not say
Explanation: True, Wind patterns are important and are often analyzed using a wind spectrum.
Wind flows from _______ pressure area to ________ pressure area.
A. high, high
B. high, low
C. low, high
D. low, low
Explanation: Wind always flows from a high pressure area to a low pressure area. The difference in pressures causes wind to flow from in a direction. Winds originate from the heat received by sun which heat’s the earth’s surface unevenly resulting in a pressure difference.
A ________ is a brief increase in wind speed for a very short period of time, typically less than 20 seconds and has a transient characteristic unlike a squall.
D. None of the above
Explanation: A gust or a wind gust is a brief increase in wind speed for a very short period of time, typically less than 20 seconds and has a transient characteristic unlike a squall.
Which of the following best describes the motion of air on earth?
A. A one-dimensional vector
B. A two-dimensional vector
C. A three-dimensional vector
D. A four-dimensional vector
Explanation: The motion of air on earth is best described as a three-dimensional vector. It is also important to note that air motion is typically described and studied relative to earth’s rotation.
Which of the following is required for the installation of a wind turbine system?
A. A weak wind flow
B. Still air
C. A consistent wind flow with obstructions
D. A consistent and strong wind flow
Explanation: For a wind turbine system to run effectively, it requires a good wind site. A good wind site is one with a consistent and strong wind flow in a direction.
Diurnal caused by the difference between temperatures during the day and at night.
C. Can be yes or no
D. Can not say
Explanation: Yes, Diurnal caused by the difference between temperatures during the day and at night.