MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Transformers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Welding transformers work on principle that weld is actually __________________ |
| A. | open circuit |
| B. | short circuit |
| C. | circuit with finite resistance |
| D. | circuit with finite reactance |
| Answer» C. circuit with finite resistance | |
| 2. |
For welding transformer as current increases induced emf ______________________ |
| A. | stays constant |
| B. | increases |
| C. | decreases |
| D. | depends on application |
| Answer» D. depends on application | |
| 3. |
WELDING_TRANSFORMERS_WORK_ON_PRINCIPLE_THAT_WELD_IS_ACTUALLY___________________?$ |
| A. | open circuit |
| B. | short circuit |
| C. | circuit with finite resistance |
| D. | circuit with finite reactance |
| Answer» C. circuit with finite resistance | |
| 4. |
For welding transformer as current increases induced emf _____________________? |
| A. | stays constant |
| B. | increases |
| C. | decreases |
| D. | depends on application |
| Answer» D. depends on application | |
| 5. |
V-I characteristics of welding transformer are _____________________ |
| A. | increasing slowly |
| B. | increasing steeply |
| C. | decreasing slowly |
| D. | decreasing steeply |
| Answer» E. | |
| 6. |
Welding transformer is _______________________ |
| A. | step-up transformer |
| B. | step-down transformer |
| C. | auto transformer |
| D. | one-one transformer |
| Answer» C. auto transformer | |
| 7. |
Under fault conditions current flowing through the grounding transformer is _____________ |
| A. | very large |
| B. | zero |
| C. | some small non-zero value |
| D. | depends on fault |
| Answer» B. zero | |
| 8. |
Which harmonic currents flow through the grounding transformer secondary? |
| A. | Triple |
| B. | Fifth |
| C. | Eleventh |
| D. | Seventh |
| Answer» B. Fifth | |
| 9. |
The secondaries of grounding transformer are generally ___________________ |
| A. | Star only |
| B. | Star with neutral taken out |
| C. | Delta |
| D. | Open-delta |
| Answer» D. Open-delta | |
| 10. |
Grounding transformer is ______________ |
| A. | Step-up transformer |
| B. | Step-down transformer |
| C. | Autotransformer |
| D. | Any transformer can be grounding transformer |
| Answer» C. Autotransformer | |
| 11. |
When grounding transformer is employed? |
| A. | When neutral is available |
| B. | When neutral is not available |
| C. | When transformer of type Y/D is used |
| D. | Always |
| Answer» C. When transformer of type Y/D is used | |