MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Capacitors do not suffer from ________ |
| A. | dielectric breakdown |
| B. | material dependence |
| C. | excess electric potential |
| D. | memory effect |
| Answer» E. | |
| 2. |
Flywheels are used in uninterrupted power supply (UPS). |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The central shaft in a flywheel energy storage device rotates on two magnetic bearings. |
| A. | False |
| B. | True |
| Answer» C. | |
| 4. |
How does a flow battery energy storage work? |
| A. | Electrolyte tanks pumps electrodes current |
| B. | Electrolyte tanks pumps current electrodes |
| C. | Electrolyte tanks current electrodes pumps |
| D. | Electrolyte tanks electrodes current pumps |
| Answer» B. Electrolyte tanks pumps current electrodes | |
| 5. |
Which of the following are used for large scale battery energy storage? |
| A. | Li-ion batteries |
| B. | Capacitors |
| C. | Lead acid |
| D. | Reservoirs |
| Answer» D. Reservoirs | |
| 6. |
Which of the following best indicates the flow diagram of power generation mode in compressed air energy storage? |
| A. | Storage LPT HPT generator |
| B. | Storage HPT LPT generator |
| C. | Storage LPT generator HPT |
| D. | HPT Storage LPT generator |
| Answer» C. Storage LPT generator HPT | |
| 7. |
Which of the following best indicates the flow diagram of storage mode in compressed air energy storage? |
| A. | Power from grid motor compressor storage |
| B. | Power from grid motor storage compressor |
| C. | Power from grid compressor motor storage |
| D. | Motor power from grid compressor storage |
| Answer» B. Power from grid motor storage compressor | |
| 8. |
What is a major disadvantage with pumped hydro-electric system? |
| A. | No dependence on geographical locations |
| B. | Small scale construction for effective functioning |
| C. | Low initial costs of construction |
| D. | Depends on specific geographical locations for the construction of the two reservoirs |
| Answer» E. | |
| 9. |
Which of the following is an application of pumped hydro-electric storage? |
| A. | Energy source |
| B. | Frequency regulation only in pumping mode |
| C. | Frequency regulation in both pumping and generation modes |
| D. | Absorbs power to increase the net expenses |
| Answer» D. Absorbs power to increase the net expenses | |
| 10. |
How does pumped hydro-electric storage work? |
| A. | Pumps water from higher level to a lower level |
| B. | Pumps water from lower level to higher level |
| C. | Uses electrical energy present in the water |
| D. | Uses nuclear energy present in the water molecules |
| Answer» C. Uses electrical energy present in the water | |
| 11. |
Efficiency of pumped hydro-electric storage is in the range of _________ |
| A. | 50% 80% |
| B. | 80% 120% |
| C. | 10% 20% |
| D. | 45% 50% |
| Answer» B. 80% 120% | |
| 12. |
Which of the following have large power (>50MW) and storage capacities (>100MWh)? |
| A. | Memory effect |
| B. | Battery energy storage (BES) and flow battery energy storage |
| C. | Super capacitor energy storage and flywheel energy storage |
| D. | Pumped hydro-electric storage and underground pumped hydro-electric storage |
| Answer» E. | |
| 13. |
What is memory effect? |
| A. | Electro-hydrogen generation |
| B. | Pumped storage |
| C. | Remembering a charging level |
| D. | Electric grid |
| Answer» D. Electric grid | |
| 14. |
What is charge-to-discharge ratio? |
| A. | Time taken to charge the device |
| B. | Ratio of time taken to charge the device relative to the time taken to discharge the device |
| C. | Ratio of the amount of charge during charging cycle to the amount of charge during discharge cycle |
| D. | Time taken to discharge the device |
| Answer» C. Ratio of the amount of charge during charging cycle to the amount of charge during discharge cycle | |
| 15. |
What is depth of discharge? |
| A. | Percentage of the battery that is discharged during a cycle |
| B. | Percentage of the battery that is discharged |
| C. | Amount of charge discharged from a battery during a cycle |
| D. | Amount of charge discharged from a battery |
| Answer» B. Percentage of the battery that is discharged | |