Transformers A transformer is an efficient device because it _______ Is a static device Uses inductive coupling Uses capacitive coupling Uses electric coupling Is a static device Uses inductive coupling Uses capacitive coupling Uses electric coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Auto transformer Power transformer Current transformer Voltage transformer Auto transformer Power transformer Current transformer Voltage transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following parts of a transformer is visible from outside? Bushings Secondary winding Core Primary winding Bushings Secondary winding Core Primary winding ANSWER DOWNLOAD EXAMIANS APP
Transformers In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues? 0 W 1,020 W 111.5 W 14.1 W 0 W 1,020 W 111.5 W 14.1 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. The supply frequency Square of thickness of core lamination The flux density in the core Thickness of core lamination The supply frequency Square of thickness of core lamination The flux density in the core Thickness of core lamination ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer the energy is conveyed from primary to secondary through air None of these through cooling coil by the flux through air None of these through cooling coil by the flux ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS