NEIEP Transformers Review Questions (410) With
Appropriate Solutions.
Inductance - accurate answers-is the property of the coil of a wire that
opposes a change in current in an electromagnetic device
False (Len's Law) States - accurate answers-(True/False) Ohm's Law states
that when voltage is initially applied to a coil, the induced voltage opposes the
source voltage.
Low - accurate answers-When voltage is initially applied to a coil, current is
Counter EMF - accurate answers-The induced voltage that opposes any
change in current is called
Greatest - accurate answers-Counter EMF is greatest when the lines of flux are
expanding or contracting at their (lowest/greatest) rate of change.
Mutual Inductance - accurate answers-When inductors share magnetic lines of
force it is referred to as
Primary Winding - accurate answers-The coil where the AC source voltage is
applied is called the
Secondary Winding - accurate answers-The coil where the EMF is induced is
called the
In - accurate answers-When primary and secondary windings are wound in
the same direction, the voltages will be (in/out of) phase
Out of - accurate answers-When the primary and secondary windings are
wound in the opposite direction, the voltages will be (in/out of) Phase.
True - accurate answers-(True/False) Another way of changing the phase
relationship between the primary and the secondary is by changing the
ground reference point in the secondary.
Eddy Currents - accurate answers-Losses within the core due to circulating
currents are called.
Appropriate Solutions.
Inductance - accurate answers-is the property of the coil of a wire that
opposes a change in current in an electromagnetic device
False (Len's Law) States - accurate answers-(True/False) Ohm's Law states
that when voltage is initially applied to a coil, the induced voltage opposes the
source voltage.
Low - accurate answers-When voltage is initially applied to a coil, current is
Counter EMF - accurate answers-The induced voltage that opposes any
change in current is called
Greatest - accurate answers-Counter EMF is greatest when the lines of flux are
expanding or contracting at their (lowest/greatest) rate of change.
Mutual Inductance - accurate answers-When inductors share magnetic lines of
force it is referred to as
Primary Winding - accurate answers-The coil where the AC source voltage is
applied is called the
Secondary Winding - accurate answers-The coil where the EMF is induced is
called the
In - accurate answers-When primary and secondary windings are wound in
the same direction, the voltages will be (in/out of) phase
Out of - accurate answers-When the primary and secondary windings are
wound in the opposite direction, the voltages will be (in/out of) Phase.
True - accurate answers-(True/False) Another way of changing the phase
relationship between the primary and the secondary is by changing the
ground reference point in the secondary.
Eddy Currents - accurate answers-Losses within the core due to circulating
currents are called.
