

MCQOPTIONS
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1. |
Precautions are essential for ensuring that the secondary of a CT is not open circuited when the primary circuit carries a current because |
A. | dangerously high voltage might develop across the secondary |
B. | the ferromagnetic core may develop residual magnetism |
C. | the reflected impedance may prevent the flow of current in the primary circuit |
D. | none of these |
Answer» B. the ferromagnetic core may develop residual magnetism | |