IP
how efficient are transformers?
95% efficient
what is self-induction?
changing magnetic fields that is created by inducing an opposing voltage in a single coil of wire.
how does the number of turns in a coil affect electromotive force (EMF)?
where is the autotransformer located in the x-ray circuit?
in the primary/low voltage circuit, between the incoming line voltage and the primary side of step-up transformer.
what is another name for the step-up transformer?
high-voltage or high-tension transformer
what do transformers regulate in the x-ray circuit?
voltage
what is mutual induction?
inducing a current through a secondary coil by varying the current through the primary coil.
how is voltage related to the turns ratio is a transformer?
voltage is directly proportional to the turns ratio
what is the primary purpose of the autotransformer?
determine amount of line voltage that will be sent to the step-up transformer.
what does the step-up transformer do in the x-ray circuit?
1. separates low voltage and high voltage sections.
2. converts low voltage into high voltage
what principle do transformers operate on?
electromagnetic induction, and require alternating current (AC)
How does speed effect electromotive force (EMF)?
as speed increases, EMF increases
what happens to voltage as the turns ratio increases?
the output voltage increases at the same rate
the autotransformer operates on the principle of ________?
self-induction
the step-up transformer is where voltage becomes______?
kilovoltage
what is electromagnetic induction?
creating an electromotive force (EMF) or potential difference (voltage) within a conductor material that cuts across magnetic lines of force.
How does the strength of the magnetic field effect electromotive force (EMF)?
as magnetic field increases, a greater EMF is produced
what is the transformer voltage formula?
Vs/Vp=Ts/Tp
CROS MULTIPLY AND SOLVE FOR THE UNKNOWN
how does the single coil function in a autotransformer?
acts as both primary and secondary sides of the autotransformer.
the step-up transformer operates on the principle of _______?
mutual induction.
what are the two types of induction?
1. self-induction
2. mutual induction
how does angle effect electromotive force (EMF)?
as the angle approaches 90 degrees, a greater EMF is produced
what do the variable in the transformer formula respresent?
Vs= secondary voltage
Vp= primary voltage
Ts= secondary turns
Tp= primary turns
the autotransformer is the source for _____?
kV
the step-up transformer converts the _________?
incoming low voltage from secondary side of autotransformer, into high voltage (KVP) needed to produce x-rays