Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 75, 85 20, 30 40, 50 30, 60 75, 85 20, 30 40, 50 30, 60 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a glass bulb mercury arc rectifier the maximum current rating is restricted to 500 A 1500 A 2000 A 200 A 500 A 1500 A 2000 A 200 A ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A mercury arc rectifier possesses ________ regulation characteristics straight line none of the listed here curved line exponential straight line none of the listed here curved line exponential ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies 0.5 V to 1.5 V per cm length of the arc 0.05 V to 0.2 V per cm length of the arc none of the listed here 2 V to 3.5 V per cm length of the arc 0.5 V to 1.5 V per cm length of the arc 0.05 V to 0.2 V per cm length of the arc none of the listed here 2 V to 3.5 V per cm length of the arc ANSWER DOWNLOAD EXAMIANS APP
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 all of the listed here maximum grid voltage non of the listed here critical grid voltage all of the listed here maximum grid voltage non of the listed here critical grid voltage ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The cathdde voltage drop, in a mercury arc rectifier, is due to expenditure of energy in overcoming the electrostatic field surface resistance expenditure of energy in liberating electrons from the mercury expenditure of energy in ionization expenditure of energy in overcoming the electrostatic field surface resistance expenditure of energy in liberating electrons from the mercury expenditure of energy in ionization ANSWER DOWNLOAD EXAMIANS APP
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