Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 85 to 90% 90 to 95% 65 to 75% 80 to 85% 85 to 90% 90 to 95% 65 to 75% 80 to 85% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following AC. motors is usually used in large motor-generator sets? Slip ring induction motor Synchronous motor Any of the listed here Squirrel cage induction motor Slip ring induction motor Synchronous motor Any of the listed here Squirrel cage induction motor ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a grid control of mercury arc rectifiers when the grid is made positive relative to cathode, then it the electrons on their may to anode. decelerates accelerates any of the listed here none of the listed here decelerates accelerates any of the listed here none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a rotary converter armature currents are d.c. only a.c. only partly a.c. and partly d.c. None of the listed here d.c. only a.c. only partly a.c. and partly d.c. None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following applications, direct current is absolutely essential ? Illumination Traction Variable speed operation Electrolysis Illumination Traction Variable speed operation Electrolysis ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters With a motor converter it is possible to obtain D.C. voltage only upto 200-100 V 1000-1200 V 1700-2000 V 600-800 V 200-100 V 1000-1200 V 1700-2000 V 600-800 V ANSWER DOWNLOAD EXAMIANS APP
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