MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Wind Energy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
_______ speed WECS is the most flexible in terms of the generator used. |
| A. | Full variable |
| B. | Limited variable |
| C. | Half variable |
| D. | Fixed |
| Answer» B. Limited variable | |
| 2. |
Which of the following is a flowchart depicting WECS modelling? |
| A. | Wind turbine aerodynamic model gear train model power grid generator (PMSG/DFIG) |
| B. | Wind turbine aerodynamic model generator (PMSG/DFIG) gear train model power grid |
| C. | Wind turbine aerodynamic model generator (PMSG/DFIG) power grid gear train model |
| D. | Wind turbine aerodynamic model gear train model generator (PMSG/DFIG) power grid |
| Answer» E. | |
| 3. |
Which of the following generators are mostly used in WECS? |
| A. | PMSG and SCIG |
| B. | DFIG and SCIG |
| C. | DFIG and PMSG |
| D. | VAWT and HAWT |
| Answer» D. VAWT and HAWT | |
| 4. |
What is super-synchronous mode in doubly-fed induction generator (DFIG)? |
| A. | Rotor runs below synchronous speed |
| B. | Rotor runs above synchronous speed |
| C. | Rotor runs at synchronous speed |
| D. | Rotor takes power from AC mains |
| Answer» C. Rotor runs at synchronous speed | |
| 5. |
What is sub-synchronous mode in doubly-fed induction generator (DFIG)? |
| A. | Rotor runs below synchronous speed |
| B. | Rotor runs above synchronous speed |
| C. | Rotor runs at synchronous speed |
| D. | Slip power is fed into AC power supply |
| Answer» B. Rotor runs above synchronous speed | |
| 6. |
What is the function of grid side converter? |
| A. | To ensure operation at low power factor |
| B. | To control generator in terms of reactive power |
| C. | To control generator in terms of active power |
| D. | To control the DC-link voltage |
| Answer» E. | |
| 7. |
What is the function of rotor side converter? |
| A. | To control the DC-link voltage |
| B. | To ensure operation at large power factor |
| C. | To control generator in terms of active and reactive power |
| D. | To ensure operation at low power factor |
| Answer» D. To ensure operation at low power factor | |
| 8. |
Which of the following components are used as converters in power electronics converter? |
| A. | BJT |
| B. | Earphone |
| C. | IGBT |
| D. | Wi-Fi driver |
| Answer» D. Wi-Fi driver | |
| 9. |
Which generator is used in variable speed WECS? |
| A. | Squirrel-cage induction |
| B. | Doubly-fed induction |
| C. | Induction squirrel |
| D. | Induction generator |
| Answer» C. Induction squirrel | |
| 10. |
How is the speed varied in limited variable speed WECS? |
| A. | Variable rotor resistance |
| B. | Fixed rotor resistance |
| C. | Fixed capacitance |
| D. | Variable rotor |
| Answer» B. Fixed rotor resistance | |