MCQOPTIONS
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MCQOPTIONS
This section includes 5 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. |
Only drawback of compensating winding is _______ |
| A. | Cost |
| B. | Unavailability of material |
| C. | Construction |
| D. | Not a single drawback |
| Answer» B. Unavailability of material | |
| 2. |
What is the pole arc/pitch ratio, if 360 AT compensating winding is used where 1960AT is peak value? |
| A. | 0.7 |
| B. | 0.8 |
| C. | 0.9 |
| D. | 0.6 |
| Answer» E. | |
| 3. |
If pole arc is less than pole pitch, a compensating winding will have ampere-turns _________ (compare to peak ampere turns). |
| A. | Less |
| B. | Equal |
| C. | More |
| D. | Can t be specified |
| Answer» B. Equal | |
| 4. |
A compensating winding with ampere-turns greater than peak ampere turns is required in order to neutralize the effect of armature reaction because _____________ |
| A. | Pole arc = Pole pitch |
| B. | Pole arc > Pole pitch |
| C. | Pole arc < Pole pitch |
| D. | Can t be determined using pole arc, pole pitch |
| Answer» C. Pole arc < Pole pitch | |
| 5. |
Axis undergo shifting as a result of armature reaction, can be balanced by ______ |
| A. | Increase in armature current |
| B. | Decrease in armature current |
| C. | Introducing interpoles |
| D. | Removing interpoles |
| Answer» D. Removing interpoles | |