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Rectifiers and Converters

Rectifiers and Converters
In a glass bulb mercury arc rectifier the maximum current rating is restricted to

2000 A
500 A
1500 A
200 A

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Rectifiers and Converters
The ionization potential of mercury is approximately

10.4 V
None of the listed here
16.4 V
5.4 V

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Rectifiers and Converters
Selenium rectifier can be operated at temperatures as high as

75°C
25°C
40°C
60°C

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Rectifiers and Converters
The efficiency of the copper oxide rectifier seldom exceeds

85 to 90%
65 to 75%
90 to 95%
80 to 85%

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Rectifiers and Converters
A mercury arc rectifier possesses ________ regulation characteristics

straight line
curved line
exponential
none of the listed here

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Rectifiers and Converters
The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following

anode drop, cathode drop and arc drop
anode drop and arc drop
anode drop and cathode drop
cathode drop and arc drop

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