MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Power Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A 2-wire ring distributor is 300m long and fed at 240V at A . At B , 150m away from A, a load of 120A is taken and at C , 100m away in opposite direction a load of 80A is taken. If the resistance per 100m of single conductor is 0.03 , then current in section AB feeder is ___________ |
| A. | 86.67 A |
| B. | 48.76 A |
| C. | 88 A |
| D. | 98.4 A |
| Answer» B. 48.76 A | |
| 2. |
A transmission line has line parameters A =0.8, B= 200 90o, C = 0.5*10-6 operating at 400kV at no load. The sending current in line will be ___________ |
| A. | 0.1443 |
| B. | 1.443 |
| C. | 0.324 |
| D. | 3.245 |
| Answer» B. 1.443 | |
| 3. |
Two conductors of a single phase line, having the 1cm diameter and arranged in a vertical plane with one conductor mounted 1m above other. A second identical line is mounted at same height as first and spaced horizontally 0.25m apart. The two upper and lower conductors are connected in parallel. The inductance of the line is __________(mH/km) |
| A. | 0.42 |
| B. | 0.84 |
| C. | 0.55 |
| D. | 0.80 |
| Answer» B. 0.84 | |
| 4. |
A transmission line has Z= (2+j8) has 10% of the voltage regulation with the lagging load of 0.8. If the load is 0.707 leading, the V.R. is ________(Assume the current is same in both cases) |
| A. | -6.63% |
| B. | -5.77% |
| C. | -10% |
| D. | -8.63% |
| Answer» B. -5.77% | |