Rectifiers and Converters Which of the following AC. motors is usually used in large motor-generator sets? Squirrel cage induction motor Any of the listed here Synchronous motor Slip ring induction motor Squirrel cage induction motor Any of the listed here Synchronous motor Slip ring induction motor 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 transformer reactance Arc voltage drop Voltage drop in resistance of transformer and smoothing chokes All of the listed here Voltage drop in transformer reactance Arc voltage drop Voltage drop in resistance of transformer and smoothing chokes ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In phase-shift control method the control is carried out by varying the of grid voltage. All of the listed here polarity magnitude phase All of the listed here polarity magnitude phase ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies 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 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 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 20, 30 30, 60 75, 85 40, 50 20, 30 30, 60 75, 85 40, 50 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier positive ions are attracted towards anode cathode mercury pool shell bottom anode cathode mercury pool shell bottom ANSWER DOWNLOAD EXAMIANS APP
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