The level of the voltage
The basic function of a transformer is to change the level of the voltage.
In an ordinary transformer which of the following does not change
The efficiency of a power transformer is around 95%
By magnetic flux
In a transformer, electrical power is transferred from primary to secondary by magnetic flux.
The two windings of a transformer are Inductively linked.
Alternating magnetic flux
Transformer action requires a Alternating magnetic flux.
Both primary and secondary windings
The flux created by the current flowing through the primary winding induces emf in Both primary and secondary windings.
A common magnetic flux
The primary and secondary windings of a power transformer always have A common magnetic flux.
The iron core in a transformer provides a Low reluctance path to the main flux.
Primary of transformer will burn
Voltage and current
A transformer transforms Voltage and current.
No ohmic resistance on either side.
For an ideal transformer, the windings should have No ohmic resistance on either side.
Supply voltage and frequency
The core flux in transformer depends mainly on Supply voltage and frequency.
Remain the same and increase
Change to three times the original value
Increase by three times
Both magnetizing component and core loss component of current will decrease
If the supply frequency of a transformer is increased, keeping the supply voltage constant, then Both magnetizing component and core loss component of current will decrease.
Increase of hysteresis loss and no change in the eddy-current loss