Electrical Engineering : Rectifiers And Converters QUESTIONS AND ANSWERS :: part2 : 6 to 10
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.Which of the following is the loss within the mercury arc rectifier chamber ? |
| Voltage drop in arc |
| Voltage drop at the anode |
| Voltage drop at the cathode |
| All of the above |
7.Copper oxide rectifier is usually designed not to operate above |
| 10�C |
| 20�C |
| 30�C |
| 45�C |
8.In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable |
| 25, 35 |
| 40, 50 |
| 60, 70 |
| 75, 85 |
9.The efficiency of an electrolytic rectifier is nearly |
| 80% |
| 70% |
| 60% |
| 40% |
10.In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of |
| shunt motor |
| synchronous motor |
| induction regulator |
| synchronous generator |
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