1. The wind energy was the principal energy source for power pumping water. A- Yes B-No 2. No disadvantages for the wind energy A-Yes [B- No 3. In 2009 , the wind power produced in the world as source of power diesel is around: A-18 MW B- 38MW C-48MW D-28 MW E-24MW 4. The wind power density is calculated by this formula: AP=1.5v2BP=0.5v26CP=0.5v4 (D) P=0.5/v2 5. When we multiply the wind speed by cubic root 3 , the wind power will be multiplied by: A- 6 B- 9 C- 27 D- 18 E- 3 6. To calculate the actual and the more precise wind power we can use: A- Speed histogram B B average speed C-All mentioned 7. The dependence between wind speed and height is: A-linear B-inverse C- non-linear D-All mentioned 8. To convert wind power to electricity we generally use: A -Heat machine B - Wind turbine C-Compressor D-Rotor E-Dynamo 9. HAWT means: A - Heat average wind Thermal B-Heat annual wind thermic C-Heat annual wind temperature F - Horizontal axe wind turbine 10. The power coefficient represents: A. The power produced minus the power in the wind B- The power produced by the wind C- The wind power out divided by the power in the wind. 11. In the wind maps, the map is classified into classes in function of the coefficient factor (CF). In class 5 the CF is: A- 35% B 25% C 45% E- 42%. 12. The performance of a wind turbine is evaluated by: A- The AEP B- The coast of The AEP C - The AEP divided by the coast D- The comparison of the coast of the AEP with coast of same power produced by the use of other source than wind. 13. The gradient of temperature, by 1km, in the crust of earth is: A25C30C B 17C30CC10C35C D. 25C35C 14. The types number of geothermal energy are A-6B-5C-4D-7E-2F-3. 15. Air to air heat pump use air to exchange heat: A- Only with condenser B-Only with evaporator C-Both with evaporator and condenser D- All nentioned 6. When we use a heat pump in heating mode the Freon flow from the compressor to: 1- the evaporator which is the indoor compound B-The condenser which is the indoor compound. he valve