Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Applied voltage is sinusoidal Iron core has high permeability Transformer is not an efficient device Air is not a good magnetic insulator Applied voltage is sinusoidal Iron core has high permeability Transformer is not an efficient device ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 180 V 2 V 20 V 18 V 180 V 2 V 20 V 18 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to one great than one None of these less than one approximately equal to one great than one None of these less than one ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in All of the listed here magnetic interference with communication circuits increased core losses increased I2R losses All of the listed here magnetic interference with communication circuits increased core losses increased I2R losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The noise produced by a transformer is termed as zoom buzz hum ringing zoom buzz hum ringing ANSWER DOWNLOAD EXAMIANS APP
Transformers Burden of a current transformer is usually expressed in Volt amperes Amperes Kilowatt Volts Volt amperes Amperes Kilowatt Volts ANSWER DOWNLOAD EXAMIANS APP
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