Rectifiers and Converters Which of the following are the applications of D.C. system? Arc welding Battery charging work Electrolytic and electro-chemical processes All of the listed here Arc welding Battery charging work Electrolytic and electro-chemical processes All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 90 to 95% 80 to 85% 85 to 90% 65 to 75% 90 to 95% 80 to 85% 85 to 90% 65 to 75% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A commutating rectifier consists of commutator driven by A D.C. series motor A synchronous motor An induction motor A D.C. shunt motor A D.C. series motor A synchronous motor An induction motor A D.C. shunt motor ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters On which of the following factors the number of phases for which a rectifier should be designed depends? The voltage regulation of the rectifier should be low In the output circuit there should be no harmonics The power factor of the system should be high All of the listed here The voltage regulation of the rectifier should be low In the output circuit there should be no harmonics The power factor of the system should be high All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of Shunt motor Synchronous motor Induction regulator Synchronous generator Shunt motor Synchronous motor Induction regulator Synchronous generator ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of an electrolytic rectifier is nearly 40 % 60 % 50 % 70 % 40 % 60 % 50 % 70 % ANSWER DOWNLOAD EXAMIANS APP
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