Rectifiers and Converters In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as maximum grid voltage all of the listed here non of the listed here critical grid voltage maximum grid voltage all of the listed here non of the listed here critical grid voltage ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier______ flow from anode to cathode electrons All of the listed here ions ions and electrons electrons All of the listed here ions ions and electrons ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a rotary converter I2R losses as compared to a D.C. generator of the same size will be Less None of the listed here More Remain same Less None of the listed here More Remain same ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier positive ions are attracted towards anode mercury pool shell bottom cathode anode mercury pool shell bottom cathode ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by 5 to 10 per cent None of the listed here 25 to 30 per cent 15 to 20 per cent 5 to 10 per cent None of the listed here 25 to 30 per cent 15 to 20 per cent ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters To produce cathode spot in a mercury arc rectifier tube is evacuated an auxiliary electrode is used low mercury vapour pressures are used anode is heated tube is evacuated an auxiliary electrode is used low mercury vapour pressures are used anode is heated ANSWER DOWNLOAD EXAMIANS APP
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