Transformers In case of 3-phase induction motors, plugging means 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 pulling the motor directly on line without a starter interchanging two supply phases for quick stopping locking of rotor due to harmonics ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Current transformer Power transformer Voltage transformer Auto transformer Current transformer Power transformer Voltage transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following 3 phase connections of transformer create disturbances in communication systems Delta/Delta Delta/Star Star/Delta Star/Star Delta/Delta Delta/Star Star/Delta Star/Star ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. Increase the wight Provide tight magnetic coupling None of the listed here Reduce core loss Increase the wight Provide tight magnetic coupling None of the listed here Reduce core loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. The flux density in the core Square of thickness of core lamination The supply frequency Thickness of core lamination The flux density in the core Square of thickness of core lamination The supply frequency Thickness of core lamination ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it is safe to human beings avoids core saturation and high voltage induction protects the primary circuit None of these is safe to human beings avoids core saturation and high voltage induction protects the primary circuit None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS