Transformers By laminating the core of a transformer, we decrease _____ Hysteresis loss Eddy current loss Copper loss Leakage reactance Hysteresis loss Eddy current loss Copper loss Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 12 V 240 V 2,400 V 120 V 12 V 240 V 2,400 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 450 350 900 210 450 350 900 210 ANSWER DOWNLOAD EXAMIANS APP
Transformers Distribution transformers are generally designed for maximum efficiency around 25% load Zero load 50% load 90% load 25% load Zero load 50% load 90% load ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer transfers electrical energy from primary to secondary usually with a change in ______ Frequency Voltage Time period Power Frequency Voltage Time period Power ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to one None of these great than one less than one approximately equal to one None of these great than one less than one ANSWER DOWNLOAD EXAMIANS APP
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