MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Transformers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
x/ 3:1 ratio is obtained in ______________ |
| A. | Star/delta |
| B. | Delta/star |
| C. | Delta/delta |
| D. | Star/star |
| Answer» C. Delta/delta | |
| 2. |
What is the ratio of transformation of star/delta connection? |
| A. | Phase transformation x:1, line transformation x:1 |
| B. | Phase transformation x:1, line transformation 3x:1 |
| C. | Phase transformation x:1, line transformation 3x:1 |
| D. | Can t determine with information available |
| Answer» B. Phase transformation x:1, line transformation 3x:1 | |
| 3. |
Star/delta connection is also called as ____________ |
| A. | 300-connection |
| B. | 00-connection |
| C. | -300-connection |
| D. | 300/-300-connection |
| Answer» E. | |
| 4. |
Open delta connection has VA rating of _______________ |
| A. | 3 times delta/delta VA rating |
| B. | 1/ 3 times delta/delta VA rating |
| C. | 3 times delta/delta VA rating |
| D. | 1/3 times delta/delta VA rating |
| Answer» C. 3 times delta/delta VA rating | |
| 5. |
What is the ratio of transformation of delta/delta connection? |
| A. | Phase transformation x:1, line transformation x:1 |
| B. | Phase transformation x:1, line transformation 2x:1 |
| C. | Phase transformation x:1, line transformation x/3:1 |
| D. | Can t determine |
| Answer» B. Phase transformation x:1, line transformation 2x:1 | |
| 6. |
In a three-phase star delta transformer, what is the angle difference between primary and secondary phase voltages? |
| A. | Delta side leads by 300 |
| B. | Delta side lags by 300 |
| C. | Star side leads by 300 |
| D. | Star side lags by 300 |
| Answer» B. Delta side lags by 300 | |