The potential drop in the arc, in a mercury arc rectifier, varies________?
Anone of the above
B2 V to 3.5 V per cm length of the arc
C0.05 V to 0.2 V per cm length of the arc
D0.5 V to 1.5 V per cm length of the arc
Correct answer
B. 2 V to 3.5 V per cm length of the arc
Explanation
The correct answer is 2 V to 3.5 V per cm length of the arc.