MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Energy Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the total power produced if the turbine diameter is 90m? |
| A. | 0.155KW |
| B. | 0.982 KW |
| C. | 1.452 KW |
| D. | 3.12 KW |
| Answer» B. 0.982 KW | |
| 2. |
Calculate the air density when 18m/s wind is at 1std atmospheric pressure and 34oC? |
| A. | 1.149 kg/m3 |
| B. | 1.9 kg/m3 |
| C. | 2.88 kg/m3 |
| D. | 5.89 kg/m3 |
| Answer» B. 1.9 kg/m3 | |
| 3. |
Calculate the air density, when 10m/s wind is at 1std atmospheric pressure and 15oC? |
| A. | 1.226 kg/m3 |
| B. | 1.033 kg/m3 |
| C. | 2.108 kg/m3 |
| D. | 0.922 kg/m3 |
| Answer» B. 1.033 kg/m3 | |
| 4. |
Select the formula for total power pt? |
| A. | Pt = \(\frac{1}{2gc}\) ρAVi3 |
| B. | Pt = ρAVi3D3 |
| C. | Pt = \(\frac{1}{2gc}\) Vi3D3 |
| D. | Pt = \(\frac{2gc}{Vi^3}\) |
| Answer» B. Pt = ρAVi3D3 | |
| 5. |
WHAT_IS_THE_TOTAL_POWER_PRODUCED_IF_THE_TURBINE_DIAMETER_IS_90M??$ |
| A. | 0.155KW |
| B. | 0.982 KW |
| C. | 1.452 KW |
| D. | 3.12 KW |
| Answer» B. 0.982 KW | |
| 6. |
What is the total power produced if the turbine diameter is 120m? |
| A. | 0.277 KW |
| B. | 1.224 KW |
| C. | 4.28 KW |
| D. | 0.89 KW |
| Answer» B. 1.224 KW | |
| 7. |
Calculate the air density when 18m/s wind is at 1std atmospheric pressure and 34oC? |
| A. | 1.149 kg/m<sup>3</sup> |
| B. | 1.9 kg/m<sup>3</sup> |
| C. | 2.88 kg/m<sup>3</sup> |
| D. | 5.89 kg/m<sup>3</sup> |
| Answer» B. 1.9 kg/m<sup>3</sup> | |
| 8. |
Calculate the air density, when 10m/s wind is at 1std atmospheric pressure and 15oC? |
| A. | 1.226 kg/m<sup>3</sup> |
| B. | 1.033 kg/m<sup>3</sup> |
| C. | 2.108 kg/m<sup>3</sup> |
| D. | 0.922 kg/m<sup>3</sup> |
| Answer» B. 1.033 kg/m<sup>3</sup> | |
| 9. |
How many types are acting on propeller type wind mill? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 10. |
How much ideal efficiency should practical turbine have? |
| A. | 10 – 12% |
| B. | 18 – 25% |
| C. | 80 – 90% |
| D. | 50 – 70% |
| Answer» E. | |
| 11. |
When was the Halladay wind mill introduced? |
| A. | 1920 |
| B. | 1923 |
| C. | 1854 |
| D. | 1864 |
| Answer» D. 1864 | |
| 12. |
Why blade velocity of wind turbine varies? |
| A. | Due to varying wind speeds |
| B. | Long length of blades |
| C. | Due to the height of mount |
| D. | Because of hotness of Sun |
| Answer» C. Due to the height of mount | |