MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 20 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. |
The active resistance of the stator winding is calculated at the temperature of 45° C. |
| A. | true |
| B. | false |
| Answer» C. | |
| 2. |
How many steps are present in the calculation of the design of rotor of reluctance motors? |
| A. | 4 |
| B. | 5 |
| C. | 3 |
| D. | 2 |
| Answer» B. 5 | |
| 3. |
How many steps are present in the calculation of the design of stator windings? |
| A. | 10 |
| B. | 11 |
| C. | 9 |
| D. | 12 |
| Answer» C. 9 | |
| 4. |
How many steps are present in the calculation of the determination of main dimensions? |
| A. | 5 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» B. 4 | |
| 5. |
How is the reluctance motor with respect to a synchronous motor and are the field windings? |
| A. | small synchronous motor with field windings |
| B. | small synchronous motor without field windings |
| C. | large synchronous motor with field windings |
| D. | large synchronous motor without field windings |
| Answer» C. large synchronous motor with field windings | |
| 6. |
HOW_MANY_STEPS_ARE_PRESENT_IN_THE_CALCULATION_OF_THE_DETERMINATION_OF_MAIN_DIMENSIONS??$ |
| A. | 5 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» B. 4 | |
| 7. |
How many steps are present in the calculation of the design of rotor of reluctance motors?$ |
| A. | 4 |
| B. | 5 |
| C. | 3 |
| D. | 2 |
| Answer» B. 5 | |
| 8. |
How many steps are present in the calculation of the design of stator windings?$ |
| A. | 10 |
| B. | 11 |
| C. | 9 |
| D. | 12 |
| Answer» C. 9 | |
| 9. |
The active resistance of the stator winding is calculated at the temperature of 450 C? |
| A. | true |
| B. | false |
| Answer» C. | |
| 10. |
What is the formula for the slot pitch factor in design of rotors? |
| A. | slot pitch factor = 3.14*rotor diameter*number of rotor slots |
| B. | slot pitch factor = 3.14/rotor diameter*number of rotor slots |
| C. | slot pitch factor = 3.14*rotor diameter/number of rotor slots |
| D. | slot pitch factor = 1/3.14*rotor diameter*number of rotor slots |
| Answer» D. slot pitch factor = 1/3.14*rotor diameter*number of rotor slots | |
| 11. |
How many design steps are involved in the determination of the losses and efficiency? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 12. |
How many steps are involved in the design of performance parameters? |
| A. | 6 |
| B. | 5 |
| C. | 7 |
| D. | 8 |
| Answer» D. 8 | |
| 13. |
What is the range of the constant used in the calculation of the active power of reluctance motor? |
| A. | 0.3-0.4 |
| B. | 0.35-0.55 |
| C. | 0.40-0.50 |
| D. | 0.35-0.60 |
| Answer» C. 0.40-0.50 | |
| 14. |
How many design dimension are present in the design of the small reluctance motor? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» D. 6 | |
| 15. |
What is the range of the ratio of the direct axis reactance to the quadrature axis reactance? |
| A. | 1.5-2.3 |
| B. | 1.6-2.7 |
| C. | 1.6-2.2 |
| D. | 1.2-2.0 |
| Answer» D. 1.2-2.0 | |
| 16. |
What is the angle at which the electromagnetic torque is maximum? |
| A. | 300 |
| B. | 450 |
| C. | 600 |
| D. | 900 |
| Answer» C. 600 | |
| 17. |
What is the power factor in the reluctance motor and the range of efficiency? |
| A. | leading power factor, 60-75% |
| B. | lagging power factor, 50-75% |
| C. | zero power factor, 55-80% |
| D. | lagging power factor, 55-75% |
| Answer» E. | |
| 18. |
What is the relation of the input voltage with the magnetic flux? |
| A. | if the input voltage is constant, the magnetic flux increases |
| B. | if the input voltage is constant, the magnetic flux decreases |
| C. | if the input voltage is constant, the magnetic flux is constant |
| D. | if the input voltage is constant, the magnetic flux is zero |
| Answer» D. if the input voltage is constant, the magnetic flux is zero | |
| 19. |
Why is the three phase reluctance motor preferred over single phase reluctance motor? |
| A. | single phase reluctance motors have the phenomenon of hunting |
| B. | single phase reluctance motors have the phenomenon of over voltage |
| C. | single phase reluctance motors have high losses |
| D. | single phase reluctance motors have low output |
| Answer» B. single phase reluctance motors have the phenomenon of over voltage | |
| 20. |
How is he reluctance motor with respect to synchronous motor and are the field windings? |
| A. | small synchronous motor with field windings |
| B. | small synchronous motor without field windings |
| C. | large synchronous motor with field windings |
| D. | large synchronous motor without field windings |
| Answer» C. large synchronous motor with field windings | |