Rectifiers and Converters Which of the following rectifiers have been used extensively in supplying direct current for electroplating? Mechanical rectifiers Mercury arc rectifiers Copper oxide rectifiers Selenium rectifiers Mechanical rectifiers Mercury arc rectifiers Copper oxide rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A commutating rectifier consists of commutator driven by A D.C. series motor A D.C. shunt motor A synchronous motor An induction motor A D.C. series motor A D.C. shunt motor A synchronous motor An induction motor ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The ionization potential of mercury is approximately 5.4 V 10.4 V 16.4 V None of the listed here 5.4 V 10.4 V 16.4 V None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a single phase rotary converter the number of slip rings will be Three Two Four Six Three Two Four Six ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The cathdde voltage drop, in a mercury arc rectifier, is due to expenditure of energy in liberating electrons from the mercury expenditure of energy in overcoming the electrostatic field expenditure of energy in ionization surface resistance expenditure of energy in liberating electrons from the mercury expenditure of energy in overcoming the electrostatic field expenditure of energy in ionization surface resistance ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 30, 60 75, 85 20, 30 40, 50 30, 60 75, 85 20, 30 40, 50 ANSWER DOWNLOAD EXAMIANS APP
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