Transformers An open-circuit test on a transformer is conducted primarily to measure insulation resistance total loss copper loss core loss insulation resistance total loss copper loss core loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The all day efficiency of a transformer is ______ the commercial efficiency. More than Less than The same as None of the listed here More than Less than The same as None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers In case of 3-phase induction motors, plugging means pulling the motor directly on line without a starter interchanging two supply phases for quick stopping locking of rotor due to harmonics starting the motor on load which is more than the rated load pulling the motor directly on line without a starter interchanging two supply phases for quick stopping locking of rotor due to harmonics starting the motor on load which is more than the rated load ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum flux produced in the core of a transformer is ______ Directly proportional to supply frequency Inversely proportional to primary voltage Inversely proportional to supply frequency None of the listed here Directly proportional to supply frequency Inversely proportional to primary voltage Inversely proportional to supply frequency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in All of the listed here increased core losses increased I2R losses magnetic interference with communication circuits All of the listed here increased core losses increased I2R losses magnetic interference with communication circuits ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Synchronous motor Induction motor Shunt motor Air motor Synchronous motor Induction motor Shunt motor Air motor ANSWER DOWNLOAD EXAMIANS APP
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