Transformers A transformer transfers electrical energy from primary to secondary usually with a change in ______ Power Voltage Time period Frequency Power Voltage Time period Frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? All of these Buchholz relay Overcurrent protection Overfluxing protection All of these Buchholz relay Overcurrent protection Overfluxing protection ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Total losses Iron losses Copper losses Friction losses Total losses Iron losses Copper losses Friction losses ANSWER DOWNLOAD EXAMIANS APP
Transformers When load on a transformer is decreased, ______loss is decreased Hysteresis Friction Copper Eddy current Hysteresis Friction Copper Eddy current ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is less than one approximately equal to one None of these great than one less than one approximately equal to one None of these great than one ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. Thickness of core lamination 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 ANSWER DOWNLOAD EXAMIANS APP
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