Buck-boost transformers should not be used to buck or boost three units in a wye for creating a 3-phase, 4-wire wye circuit from a 3-phase, 3-wire delta circuit.
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A buck-boost transformer should not be used to buck or boost…
A buck-boost transformer should not be used to buck or boost a source feeding ___ loads.
The rating of an autotransformer is ___ the maximum possible…
The rating of an autotransformer is ___ the maximum possible unbalanced load current on the neutral of the 4-wire system.
A significant limitation of an autotransformer compared to a…
A significant limitation of an autotransformer compared to a conventional transformer is the low ____.
In two-winding transformer motor starting, the motor termina…
In two-winding transformer motor starting, the motor terminal voltage does not depend on the load current.
A(n) ___ is any transformer in which the primary and seconda…
A(n) ___ is any transformer in which the primary and secondary circuits have a portion of their two windings in common.
An autotransformer can be installed in combination with the…
An autotransformer can be installed in combination with the ___ to split the percentage of change as the changer is operated.
The current in a standard two-winding transformer is determi…
The current in a standard two-winding transformer is determined by dividing the voltage, in V, by the power rating, in VA.
Autotransformers share part of the windings between the prim…
Autotransformers share part of the windings between the primary and secondary.
In autotransformer starting, transformer motor current and l…
In autotransformer starting, transformer motor current and line current are not ___ as they are in primary resistor starting.