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? 900 210 450 350 900 210 450 350 ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? High thermal conductivity High permeability Mechanical strength Low hysteresis loss High thermal conductivity High permeability Mechanical strength Low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer transfers electrical energy from primary to secondary usually with a change in ______ Voltage Frequency Power Time period Voltage Frequency Power Time period ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 9.6 0.96 0.4 4 9.6 0.96 0.4 4 ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because Uses electric coupling A static device Uses inductive coupling Uses capacitive coupling Uses electric coupling A static device Uses inductive coupling Uses capacitive coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer does not posses ______changing property. Impedance Current Voltage Power Impedance Current Voltage Power ANSWER DOWNLOAD EXAMIANS APP
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