Electrical Engineering Questions And Answers :: Rectifiers And Converters: part2



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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