MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
Identify the phasor diagram for the maximum voltage regulation from the below diagrams. |
| A. | a) |
| B. | b) |
| C. | c) |
| D. | d) |
| Answer» B. b) | |
| 2. |
The voltage regulation for transformer is given by ___________ |
| A. | (E2-V2)/E2 |
| B. | (E2-V2)/V2 |
| C. | (V2-E2)/E2 |
| D. | (V2-E2)/V2 |
| Answer» B. (E2-V2)/V2 | |
| 3. |
If the per unit leakage impedance for the primary of a transformer is ‘x’ on the given rated base value. If the voltage and volt-amperes are halved, then the changed per unit impedance will be ___________ |
| A. | 0.5x |
| B. | 2x |
| C. | 4x |
| D. | x |
| Answer» C. 4x | |
| 4. |
If the per unit leakage impedance for the primary of a transformer is ‘x’ on the given rated base value. If the voltage and volt-amperes are doubled, then the changed per unit impedance will be ___________ |
| A. | 0.5x |
| B. | 2x |
| C. | 4x |
| D. | x |
| Answer» B. 2x | |