MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Operations knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not true about shrouded turbines? |
| A. | Turbines are hidden in shrouds |
| B. | High bio fouling |
| C. | Suitable geometry can increase flow velocity |
| D. | Most of these turbines are directional |
| Answer» C. Suitable geometry can increase flow velocity | |
| 2. |
Which of the following is false with respect to turbines? |
| A. | Augmenters decrease wind passage through blades |
| B. | The blades of VAWT are prone to fatigue |
| C. | VAWT is not as common as HAWT |
| D. | Savonius wind turbine look like an S form the top |
| Answer» B. The blades of VAWT are prone to fatigue | |
| 3. |
Pick the odd one out with respect to the different types of turbines. |
| A. | Upwind turbine |
| B. | Shrouded turbine |
| C. | Anemometer |
| D. | Downwind turbine |
| Answer» D. Downwind turbine | |
| 4. |
Which of the following determines the power available in a shrouded turbine? |
| A. | Power available = CP * (Ideal Power)-1 |
| B. | Power available = CP * (Ideal Power) |
| C. | Power available = CP * (Ideal Power)2 |
| D. | Power available = CP * (Ideal Power)1/2 |
| Answer» C. Power available = CP * (Ideal Power)2 | |
| 5. |
Which of the following is false about the power coefficient of a wind turbine? |
| A. | It is the actual maximum power efficiency of a turbine |
| B. | It is a constant value for all turbines |
| C. | Ideally, its value lies between 45 and 50 |
| D. | Power coefficient has a maximum value of 0.58 |
| Answer» D. Power coefficient has a maximum value of 0.58 | |
| 6. |
Which of the following is true about Betz Law? |
| A. | Any wind turbine cannot convert more than 16/27 of wind’s kinetic energy |
| B. | Any wind turbine cannot convert more than 17/27 of wind’s kinetic energy |
| C. | The theoretical maximum power efficiency of any turbine is 0.63 |
| D. | The theoretical maximum power efficiency of any turbine is 0.64 |
| Answer» B. Any wind turbine cannot convert more than 17/27 of wind’s kinetic energy | |
| 7. |
Which of the following is the correct energy conversion in a wind turbine? |
| A. | Electrical energy to kinetic energy |
| B. | Electrical energy to mechanical energy |
| C. | Kinetic energy to electrical power |
| D. | Kinetic energy to any desired form of energy |
| Answer» D. Kinetic energy to any desired form of energy | |