MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Design Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Power ratings help in classifying machines to different classes of duties. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 2. |
What is the main objective of power ratings of machines? |
| A. | helps in building a suitable thermal model of machines |
| B. | helps in building a suitable physical model of machines |
| C. | helps in classifying the machines into different types |
| D. | helps to improve the machine efficiency |
| Answer» B. helps in building a suitable physical model of machines | |
| 3. |
Which are the important criteria related to the power ratings of the machine? |
| A. | Heat should be prevented from generation |
| B. | Heat should be dissipated through power ventilation, irrespective of the time |
| C. | Heat should be prevented through power ventilation within a short time period |
| D. | Heat should be converted to some useful form |
| Answer» D. Heat should be converted to some useful form | |
| 4. |
If the power ratings are crossed, machine breakdown occurs. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
What is the concept of power rating of machines with respect to current? |
| A. | Maximum permissible amount of current that can easily flow |
| B. | Minimum permissible amount of current that can easily flow |
| C. | Maximum permissible amount of current that can stop the machine |
| D. | Maximum permissible amount of current that can stop the machine |
| Answer» B. Minimum permissible amount of current that can easily flow | |
| 6. |
WHAT_IS_THE_MAIN_OBJECTIVE_OF_POWER_RATINGS_OF_MACHINES??$ |
| A. | helps in building a suitable thermal model of machines |
| B. | helps in building a suitable physical model of machines |
| C. | helps in classifying the machines into different types |
| D. | helps to improve the machine efficiency. |
| Answer» B. helps in building a suitable physical model of machines | |
| 7. |
Power_ratings_help_in_classifying_machines_to_different_classes_of_duties?$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 8. |
What is the ideal condition for thermal dissipation? |
| A. | Heat generated > Heat Dissipated |
| B. | Heat generated < Heat Dissipated |
| C. | Heat generated = Heat Dissipated |
| D. | Heat generated = 0 |
| Answer» D. Heat generated = 0 | |
| 9. |
What is the concept of thermal loading? |
| A. | Output power is indirectly proportional to the temperature rise |
| B. | Output power is indirectly proportional to the square of temperature rise |
| C. | Output power is directly proportional to the temperature rise |
| D. | Output power is directly proportional to the square of temperature rise |
| Answer» D. Output power is directly proportional to the square of temperature rise | |
| 10. |
What is one important criteria related to the power ratings of the machine? |
| A. | Heat should be prevented from generation |
| B. | Heat should be dissipated through power ventilation, irrespective of the time |
| C. | Heat should be prevented through power ventilation within a short time period |
| D. | Heat should be converted to some useful form |
| Answer» D. Heat should be converted to some useful form | |
| 11. |
If the power ratings are crossed, machine breakdown occurs? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
What happens if the power ratings of the machine are decided liberally? |
| A. | Damage occurs to the machine |
| B. | Efficiency of the machine improves |
| C. | Long life of the machine |
| D. | Uneconomical usage of the machine |
| Answer» E. | |
| 13. |
What happens if there is insufficient rating of the machine? |
| A. | The efficiency of the machine increases |
| B. | The efficiency of the machine improves |
| C. | Damage and shutdown occurs |
| D. | Loading problems occur |
| Answer» D. Loading problems occur | |
| 14. |
What is the concept of power rating of machines with respect to voltage? |
| A. | the required supply voltage for smooth running of the machine |
| B. | the required supply voltage for stopping the machine |
| C. | the required supply voltage for speeding the machine |
| D. | the required supply voltage for slowing up the machine |
| Answer» B. the required supply voltage for stopping the machine | |