A. the current on secondary side is negligible
B. the voltage on secondary side does not vary
C. the voltage applied on primary side is low
D. full-load current is not supplied to the transformer
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A. the current on secondary side is negligible
B. the voltage on secondary side does not vary
C. the voltage applied on primary side is low
D. full-load current is not supplied to the transformer
D. full-load current is not supplied to the transformer.
A. the current on the secondary side is negligible – This is not a correct statement. During a short circuit test, a high current is applied to the primary side of the transformer, which causes a correspondingly high current on the secondary side.
B. the voltage on the secondary side does not vary – This is not a correct statement. During a short circuit test, the voltage on the secondary side does vary as the transformer’s impedance changes.
C. the voltage applied on the primary side is low – This is not a correct statement. During a short circuit test, a high voltage is applied to the primary side of the transformer, which causes a correspondingly high current on the secondary side.
D. full-load current is not supplied to the transformer – This is a correct statement. During a short circuit test, the transformer is not loaded to its full capacity, so the iron losses are negligible. The purpose of a short circuit test is to measure the transformer’s impedance at high current levels, not to measure its efficiency at full load.