Wind Energy(Renewable Energy ) Questions and Answers

Question 1. Which of the following provides energy for winds to blow naturally?
  1.    Sun
  2.    Water
  3.    Man
  4.    Food
Explanation:-
Answer: Option A. -> Sun
Answer: (a).Sun
Question 2. What is a squall?
  1.    A sudden, sharp increase in wind speed lasting for a few hours
  2.    A sudden, sharp decrease in wind speed lasting for a few minutes
  3.    A sudden, sharp decrease in wind speed lasting for a few hours
  4.    A sudden, sharp increase in wind speed lasting for a few minutes
Explanation:-
Answer: Option D. -> A sudden, sharp increase in wind speed lasting for a few minutes
Answer: (d).A sudden, sharp increase in wind speed lasting for a few minutes
Question 3. What is a gust?
  1.    No change in wind speed
  2.    A brief decrease in wind speed for a very long period of time
  3.    A brief increase in wind speed for a very short period of time
  4.    A brief increase in wind speed for a very long period of time
Explanation:-
Answer: Option C. -> A brief increase in wind speed for a very short period of time
Answer: (c).A brief increase in wind speed for a very short period of time
Question 4. Wind flows from _______ pressure area to ________ pressure area.
  1.    high, high
  2.    high, low
  3.    low, high
  4.    low, low
Explanation:-
Answer: Option B. -> high, low
Answer: (b).high, low
Question 5. A windstorm _______
  1.    is strong enough to cause property damage
  2.    is not stronger than gust
  3.    does not exist
  4.    is not strong enough to cause property damage
Explanation:-
Answer: Option A. -> is strong enough to cause property damage
Answer: (a).is strong enough to cause property damage
Question 6. What is an aerodynamic force?
  1.    Force exerted on the body due to mass of another body nearby
  2.    Force exerted on the body by liquid
  3.    Force exerted on the body by air (or any gas) in which the body is immersed
  4.    Force exerted on the body due to a charged particle
Explanation:-
Answer: Option C. -> Force exerted on the body by air (or any gas) in which the body is immersed
Answer: (c).Force exerted on the body by air (or any gas) in which the body is immersed
Question 7. What is lift-to-drag ratio?
  1.    Amount of lift generated by a blade divided by its aerodynamic drag
  2.    Amount of drag generated by a blade divided by its lift
  3.    Amount of drag generated by a blade divided by its aerodynamic lift
  4.    Amount of lift generated by a blade divided by its aerodynamic drag
Explanation:-
Answer: Option D. -> Amount of lift generated by a blade divided by its aerodynamic drag
Answer: (d).Amount of lift generated by a blade divided by its aerodynamic drag
Question 8. The upwind side experiences a force that slows the blade.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option A. -> True
Answer: (a).True
Question 9. A higher lift-to-drag ratio indicates a higher efficiency.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option A. -> True
Answer: (a).True
Question 10. What happens on the upwind side of the wind mill blade?
  1.    No pressure is exerted
  2.    Low pressure area
  3.    High pressure area
  4.    Wind is trapped
Explanation:-
Answer: Option C. -> High pressure area
Answer: (c).High pressure area
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