Question 11 : Which of the following type of turbine or the rotor requires relatively low velocity winds for operation?
1. Cup anemometer
2. Savonius rotor
3. Darrieus type rotor
4. Magnus effect rotor
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Question 12 : Which type of vertical wind machine consists of spinning cylinders?
1. Cup anemometer
2. Savonius rotor
3. Darrieus type rotor
4. Magnus effect rotor
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Question 13 : Which type of windmill blades are made out of sheet metal or aluminum?
1. In which of the following, does machine rotor drives through a step up gear box?
1. Horizontal axis with two aerodynamic blades
2. Horizontal axis propeller type wind mill
3. Horizontal axis multi bladed type wind mill
4. Sail type wind mill
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Question 14 : What is the diameter of wind turbine blades?
1. 320 feet
2. 220 feet
3. 80 feet
4. 500 feet
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Question 15 : Which are further improvements on smock mill?
1. Post mill
2. Smock mill
3. Tower mill
4. Fan mill
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Question 16 : How is the action of yaw controlled in small turbines?
1. Tail vane
2. Blades
3. Shaft
4. Yaw motor
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Question 17 : Over load factor is also called as _____________
1. availability factor
2. plant operating factor
3. flat rating
4. cut out velocity
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Question 18 : What does WECS stands for?
1. Wind energy conversion system
2. Wind engine control system
3. Wind energy combined system
4. Wind engine comparison system
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Question 19 : Which type of wind mills blade are made out of cloth?
1. In which of the following, does machine rotor drives through a step up gear box?
1. Horizontal axis with two aerodynamic blades
2. Horizontal axis propeller type wind mill
3. Horizontal axis multi bladed type wind mill
4. Sail type wind mill
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Question 20 : What are used to turn wind energy into electrical energy?
1. Turbine
2. Generators
3. Yaw motor
4. Blades
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