Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by 25 to 30 per cent None of the listed here 5 to 10 per cent 15 to 20 per cent 25 to 30 per cent None of the listed here 5 to 10 per cent 15 to 20 per cent ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following applications, direct current is absolutely essential ? Variable speed operation Traction Electrolysis Illumination Variable speed operation Traction Electrolysis Illumination ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a single phase rotary converter the number of slip rings will be Three Four Two Six Three Four Two Six 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 magnitude polarity phase All of the listed here magnitude polarity phase ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on r.m.s. value of current voltage only current only voltage and current r.m.s. value of current voltage only current only voltage and current ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a three-phase mercury arc rectifiers each anode conducts for One-third of a cycle Two-third of a cycle One-half a cycle One-fourth of a cycle One-third of a cycle Two-third of a cycle One-half a cycle One-fourth of a cycle ANSWER DOWNLOAD EXAMIANS APP
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