MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Machines Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
From the OCC and SCC curves, what does the intercept BC represent? |
| A. | Armature reaction |
| B. | Leakage reactance |
| C. | Armature copper losses |
| D. | Sum of armature reaction and leakage reactance |
| Answer» C. Armature copper losses | |
| 2. |
From the OCC and SCC curves, what does the intercept AB represent? |
| A. | Armature reaction |
| B. | Leakage reactance |
| C. | Armature copper losses |
| D. | Sum of armature reaction and leakage reactance |
| Answer» B. Leakage reactance | |
| 3. |
Phasor diagram below is best describing the __________ |
| A. | Open circuit characteristic of alternator |
| B. | Short circuit characteristic of alternator |
| C. | External circuit characteristic of alternator |
| D. | Internal circuit characteristic of alternator |
| Answer» B. Short circuit characteristic of alternator | |
| 4. |
If it is assumed that the iron part of magnetic circuit requires zero mmf, relation between Ef and If will be __________ |
| A. | a) |
| B. | b) |
| C. | c) |
| D. | d) |
| Answer» B. b) | |
| 5. |
The load angle δ is between __________ |
| A. | Ef and Ia |
| B. | Ia and field flux |
| C. | Ef and Vt |
| D. | Vt and Ia |
| Answer» D. Vt and Ia | |
| 6. |
The internal power factor angle Ψ is between __________ |
| A. | Ef and Ia |
| B. | Ia and field flux |
| C. | Ef and Vt |
| D. | Vt and Ia |
| Answer» B. Ia and field flux | |