MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Transformers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following can be considered as error for Potential transformer? |
| A. | Magnitude errors |
| B. | Phase errors |
| C. | Unit errors |
| D. | Magnitude and phase errors |
| Answer» E. | |
| 2. |
Voltage transformers are designed to have _____________ |
| A. | high leakage reactance |
| B. | high magnetizing current |
| C. | high magnetizing reactance |
| D. | low magnetizing reactance |
| Answer» D. low magnetizing reactance | |
| 3. |
Current transformers are __________________ |
| A. | series connected type of instrument transformers |
| B. | parallel connected type of instrument transformers |
| C. | series-parallel connected type of instrument transformers |
| D. | parallel connected normal transformers |
| Answer» B. parallel connected type of instrument transformers | |
| 4. |
In CT deep saturation will cause when _________________ |
| A. | if circuit is short-circuited |
| B. | if circuit is open-circuited |
| C. | in both OC and SC conditions |
| D. | if operated at very high supply |
| Answer» C. in both OC and SC conditions | |
| 5. |
The secondary of a current transformer is always kept short-circuited while operating because it _______________________ |
| A. | avoids core saturation and high voltage induction |
| B. | is safe to human beings |
| C. | protects the primary circuit |
| D. | to keep temperature within limits |
| Answer» B. is safe to human beings | |
| 6. |
Current transformers are used for _____________________ |
| A. | to provide to measure voltages |
| B. | to measure high value of currents |
| C. | to short-circuit the unwanted instruments |
| D. | to measure low value of currents |
| Answer» C. to short-circuit the unwanted instruments | |
| 7. |
The secondary winding of which of the following listed transformers is always kept closed? |
| A. | Step-up transformer |
| B. | Step-down transformer |
| C. | Potential transformer |
| D. | Current transformer |
| Answer» E. | |
| 8. |
What will happen if secondary of a current transformer is open-circuited? |
| A. | hot because of heavy iron losses |
| B. | hot because primary will carry heavy current |
| C. | cool as there is no secondary current |
| D. | depends on other parameters |
| Answer» B. hot because primary will carry heavy current | |