MCQOPTIONS
Saved Bookmarks
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the power in the B phase. |
| A. | 0 |
| B. | 1 |
| C. | 3 |
| D. | 2 |
| Answer» B. 1 | |
| 2. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the power in the Y phase. |
| A. | 1000 |
| B. | 2000 |
| C. | 3000 |
| D. | 4000 |
| Answer» C. 3000 | |
| 3. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the power in the R phase. |
| A. | 6628 |
| B. | 6728 |
| C. | 6828 |
| D. | 6928 |
| Answer» E. | |
| 4. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the line current I3. |
| A. | (24.646+j20) A |
| B. | (-24.646+j20) A |
| C. | (-24.646-j20) A |
| D. | (24.646-j20) A |
| Answer» D. (24.646-j20) A | |
| 5. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the line current I2. |
| A. | (-27.32+j10) A |
| B. | (27.32+j10) A |
| C. | (-27.32-j10) A |
| D. | (27.32-j10) A |
| Answer» B. (27.32+j10) A | |
| 6. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the line current I1. |
| A. | (-51.96-j10) A |
| B. | (-51.96+j10) A |
| C. | (51.96+j10) A |
| D. | (51.96+j10) A |
| Answer» D. (51.96+j10) A | |
| 7. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the phase current IB. |
| A. | (34.64-j20) A |
| B. | (34.64+j20) A |
| C. | (-34.64+j20) A |
| D. | (-34.64-j20) A |
| Answer» E. | |
| 8. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Find the phase current IY. |
| A. | (10-j0) A |
| B. | (10+j0) A |
| C. | (-10+j0) A |
| D. | (-10-j0) A |
| Answer» D. (-10-j0) A | |
| 9. |
The three impedances Z1 = 20 30 , Z2 = 40 60 , Z3 = 10 -90 are delta-connected to a 400V, 3 system. Determine the phase current IR. |
| A. | (17.32-j10) A |
| B. | (-17.32-j10) A |
| C. | (17.32+j10) A |
| D. | (-17.32+j10) A |
| Answer» B. (-17.32-j10) A | |