MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which one of the following is the base reason to place field on rotor in the alternator? |
| A. | Small power in field circuit |
| B. | Insulation of high voltage is made easy on stator than on rotor |
| C. | Huge power in stator |
| D. | Large current in the stator |
| Answer» C. Huge power in stator | |
| 2. |
In a salient pole synchronous machine the air gap is least under the middle of the pole shoe and increases outwards. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
(i) Transient stability is lower than SSSL.
|
| A. | i and ii both are true |
| B. | i false, ii true |
| C. | i true, ii false |
| D. | Both are false |
| Answer» B. i false, ii true | |
| 4. |
Transient stability limit is less important than SSSL. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Series capacitors will improve the ___________ |
| A. | SSSL |
| B. | Transient stability |
| C. | Hunting |
| D. | Stiffness |
| Answer» B. Transient stability | |
| 6. |
If the load angle is increased till 135 , the consequence will be ___________ |
| A. | loss of synchronism |
| B. | no alternation of synchronism |
| C. | increase in stability limit |
| D. | reduction in stability limit |
| Answer» B. no alternation of synchronism | |
| 7. |
Steady state stability limit is defined as maximum power flow possible through a particular point without loss of stability when the ___________ |
| A. | power is increased gradually |
| B. | power is increased suddenly |
| C. | power is reduced gradually |
| D. | power is reduces suddenly |
| Answer» B. power is increased suddenly | |