Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is great than one None of these approximately equal to one less than one great than one None of these approximately equal to one less than one ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 4 μH 2 mH 2 μH 8 μH 4 μH 2 mH 2 μH 8 μH 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 240 V 2,400 V 12 V 120 V 240 V 2,400 V 12 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because it _______ Uses inductive coupling Is a static device Uses capacitive coupling Uses electric coupling Uses inductive coupling Is a static device Uses capacitive coupling Uses electric coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer does not posses ______changing property. Voltage Impedance Current Power Voltage Impedance Current Power ANSWER DOWNLOAD EXAMIANS APP
Transformers Harmonics in transformer result in All of the listed here magnetic interference with communication circuits increased I2R losses increased core losses All of the listed here magnetic interference with communication circuits increased I2R losses increased core losses ANSWER DOWNLOAD EXAMIANS APP
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