Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 65 to 75% 90 to 95% 85 to 90% 80 to 85% 65 to 75% 90 to 95% 85 to 90% 80 to 85% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply? Copper oxide rectifiers Mechanical rectifiers Electrolytic rectifiers Selenium rectifiers Copper oxide rectifiers Mechanical rectifiers Electrolytic rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following is reversible in action? All of the listed here Motor converter Rotary converter Motor generator set All of the listed here Motor converter Rotary converter Motor generator set ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters When a rectifier is loaded which of the following voltage drops take place ? All of the listed here Voltage drop in resistance of transformer and smoothing chokes Voltage drop in transformer reactance Arc voltage drop All of the listed here Voltage drop in resistance of transformer and smoothing chokes Voltage drop in transformer reactance Arc voltage drop ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The applications of selenium rectifiers are usually limited to potential of 100 V 10 V 20 V 30 V 100 V 10 V 20 V 30 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following are the applications of D.C. system? Electrolytic and electro-chemical processes Battery charging work All of the listed here Arc welding Electrolytic and electro-chemical processes Battery charging work All of the listed here Arc welding ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS