Electrical Engineering : Rectifiers And Converters QUESTIONS AND ANSWERS :: part2 : 1 to 5
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply ? |
Mechanical rectifiers |
Copper oxide rectifiers |
Selenium rectifiers |
Electrolytic rectifiers |
2.The efficiency of the copper oxide rectifier seldom exceeds |
90 to 95% |
85 to 90% |
80 to 85% |
65 to 75% |
3.The metal rectifiers, as compared to mercury arc rectifiers |
operate on low temperatures |
can operate on high voltages |
can operate on heavy loads |
give poor regulation |
4.When a rectifier is loaded which of the following voltage drops take place ? |
Voltage drop in transformer reactance |
Voltage drop in resistance of transformer and smoothing chokes |
Arc voltage drop |
All of the above |
5.In a glass bulb mercury arc rectifier the maximum current rating is restricted to |
2000 A |
1500 A |
1000 A |
500 A |
More Rectifiers And Converters QUESTIONS AND ANSWERS available in next pages
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