MCQOPTIONS
Saved Bookmarks
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. |
What is the value of Yf for a lap winding with a 4-pole, 12 commutator segments, with two coil sides/slot.?(Assume single-turns coils -retrogressive winding). |
| A. | 9 |
| B. | 3 |
| C. | 11 |
| D. | 5 |
| Answer» B. 3 | |
| 2. |
Value of commutator pitch in lap winding is_____ |
| A. | 2 |
| B. | +1 or -1 |
| C. | -2 |
| D. | Different for different parameters |
| Answer» C. -2 | |
| 3. |
Current flowing through the armature conductors Ic is related to total current Ia by_______ |
| A. | Ic = A Ia |
| B. | Ic = Ia/A |
| C. | Ic = A2 Ia |
| D. | Ic = A/Ia |
| Answer» C. Ic = A2 Ia | |
| 4. |
What is the value of Yf for a lap winding with a 4-pole, 12-slot armature with two coil sides/slot? (Assume single-turns coils – progressive winding) |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» C. 7 | |
| 5. |
What is the value of Yb for a lap winding with a 4-pole, 12-slot armature with two coil sides/slot. Assume single-turns coils. |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» D. 9 | |
| 6. |
VALUE_OF_COMMUTATOR_PITCH_IN_LAP_WINDING_IS_____?$ |
| A. | +2 |
| B. | +1 or -1 |
| C. | -2 |
| D. | Different for different parameters |
| Answer» C. -2 | |
| 7. |
What_is_the_value_of_Yf_for_a_lap_winding_with_a_4-pole,_12_commutator_segments,_with_two_coil_sides/slot.?$ |
| A. | . |
| B. | 9 |
| C. | 3 |
| D. | 11 |
| Answer» B. 9 | |
| 8. |
Current flowing through the armature conductors Ic is related to total current Ia by______? |
| A. | Ic = A Ia |
| B. | Ic = Ia/A |
| C. | Ic = A<sup>2</sup> Ia |
| D. | Ic = A/Ia |
| Answer» C. Ic = A<sup>2</sup> Ia | |
| 9. |
What is the relation between number of parallel paths(A) and number of poles(P)? |
| A. | A = P |
| B. | A < P |
| C. | A > P |
| D. | No relation exists |
| Answer» B. A < P | |
| 10. |
What is the symmetry requirement of lap winding? |
| A. | 2C/P= 0 |
| B. | 2C/P= integer |
| C. | 2C/P= non-integer |
| D. | Can’t express mathematically |
| Answer» C. 2C/P= non-integer | |
| 11. |
Equalizer rings are needed in lap winding. |
| A. | False |
| B. | True |
| Answer» C. | |
| 12. |
What is the value of Yf for a lap winding with a 4-pole, 12-slot armature with two coil sides/slot? (Assume single-turns coils – progressive winding)$ |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» C. 7 | |
| 13. |
What is the value of Yb for a lap winding with a 4-pole, 12-slot armature with two coil sides/slot. Assume single-turns coils. |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» D. 9 | |
| 14. |
What is the condition of retrogressive winding? |
| A. | Y<sub>b</sub> > Y<sub>f</sub> |
| B. | Y<sub>b</sub> < Y<sub>f</sub> |
| C. | Y<sub>b</sub> = Y<sub>f</sub> |
| D. | No condition in bterms of Y<sub>b</sub> and Y<sub>f</sub> |
| Answer» C. Y<sub>b</sub> = Y<sub>f</sub> | |
| 15. |
Resultant pitch in the lap winding is__________ |
| A. | Depends on Y<sub>b</sub> value |
| B. | Depends on Y<sub>f</sub> value |
| C. | Depends on Y<sub>b</sub> and Y<sub>f</sub> value |
| D. | Always equal to 2 |
| Answer» E. | |