Answering Exams

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______________?


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______________?

A. maximum grid voltage
B. critical grid voltage (Correct)
C. any of the above
D. none of the above

 

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