MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Dc Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For a wave wounded machine number of brushes for small, large machines respectively is ________ _________ |
| A. | 2, 2 |
| B. | 4, 2 |
| C. | 2, P |
| D. | Both values depend on the given conditions |
| Answer» D. Both values depend on the given conditions | |
| 2. |
Wave winding machines are used in ______ currents applications. |
| A. | High |
| B. | Moderate |
| C. | Low |
| D. | Can be used anywhere |
| Answer» D. Can be used anywhere | |
| 3. |
For a wave winding when a machine is 6-pole DC armature with 16 slots having 2-coil sides per slot and single-turn coil, Yf value is ____ |
| A. | 5 |
| B. | 3 |
| C. | 2 |
| D. | 7 |
| Answer» B. 3 | |
| 4. |
For a progressive wave winding Yc = ______ |
| A. | 2C/P |
| B. | 2(C+1)/P |
| C. | 2(C-1)/P |
| D. | 2C/(P+1) |
| Answer» C. 2(C-1)/P | |
| 5. |
What will be the value of “Yf + Yb” for a wave winding? |
| A. | Equal to Yc |
| B. | Half of the Yc value |
| C. | Double of the Yc value |
| D. | Four times Yc value |
| Answer» D. Four times Yc value | |
| 6. |
WAVE_WINDING_MACHINES_ARE_USED_IN________CURRENTS_APPLICATIONS.?$ |
| A. | High |
| B. | Moderate |
| C. | Low |
| D. | Can be used anywhere |
| Answer» D. Can be used anywhere | |
| 7. |
For_a_wave_wounded_machine_number_of_brushes_for_small,_large_machines_respectively_is___________________$ |
| A. | 2, 2 |
| B. | 4, 2 |
| C. | 2, P |
| D. | Both values depend on the given conditions |
| Answer» D. Both values depend on the given conditions | |
| 8. |
For a wave winding when a machine is 6-pole DC armature with 16 slots having 2-coil sides per slot and single-turn coil, Yf value is ___? |
| A. | 5 |
| B. | 3 |
| C. | 2 |
| D. | 7 |
| Answer» B. 3 | |
| 9. |
Equalizer rings are needed in the wave winding. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
For a conductor current equal to 4mA, Current carried by a particular brush in a 2-pole machine will be _____ |
| A. | 16mA |
| B. | 8mA |
| C. | 2mA |
| D. | 10mA |
| Answer» C. 2mA | |
| 11. |
What is the relation between conductor current and armature current in wave winding? |
| A. | Ic = Ia |
| B. | Ic = 2Ia |
| C. | Ic = 4Ia |
| D. | Ic = Ia/2 |
| Answer» E. | |
| 12. |
What is the spacing between the brushes for a wave winding when a machine is 6-pole DC armature with 16 slots having 2-coil sides per slot and single-turn coils. |
| A. | 4 segments |
| B. | 8 segments |
| C. | 16 segments |
| D. | 12 segments |
| Answer» C. 16 segments | |
| 13. |
Number of parallel paths in wave winding are ______ |
| A. | Equal to P |
| B. | Equal to P/2 |
| C. | 2 |
| D. | Depends on other parameters |
| Answer» D. Depends on other parameters | |
| 14. |
For a progressive wave winding Yc = ______ |
| A. | 2C/P |
| B. | 2(C+1)/P |
| C. | 2(C-1)/P |
| D. | 2C/(P+1) |
| Answer» C. 2(C-1)/P | |
| 15. |
What will be the value of “Yf + Yb” for a wave winding? |
| A. | Equal to Y<sub>c</sub> |
| B. | Half of the Y<sub>c</sub> value |
| C. | Double of the Y<sub>c</sub> value |
| D. | Four times Y<sub>c</sub> value |
| Answer» D. Four times Y<sub>c</sub> value | |