Why is copper loss also called variable loss?

1. Copper losses:- when the transformer is loaded, current flows in primary and secondary winding, there is loss of electrical energy due to the resistance of the primary winding, and secondary winding and they are called variable losses.

Why iron losses are called constant losses where as copper losses are called variable losses?

It is clear that copper loss is proportional to the square of the current i.e., copper loss at half full-load is one-fourth of that at full-load. As the current depends upon the load connected to the transformer. The copper loss varies with variation in load and is also called Variable Loss.

What is fixed loss?

Constant or Fixed Losses Constant losses are those losses which are considered to remain constant over normal working range of induction motor. The fixed losses can be easily obtained by performing no-load test on the three phase induction motor. These losses are further classified as-

What is core loss and copper loss?

Copper loss is the term often given to heat produced by electrical currents in the conductors of transformer windings, or other electrical devices. Copper losses are an undesirable transfer of energy, as are core losses, which result from induced currents in adjacent components.

What is variable loss?

These losses are also called copper losses. These losses occur due to current flowing in stator and rotor windings. As the load changes, the current flowing in rotor and stator winding also changes and hence these losses also changes. Therefore these losses are called variable losses.

Is core loss a variable loss?

Core loss, which is also referred as iron loss, consists of hysteresis loss and eddy current loss. These two losses are constant when the transformer is charged. That means the amount of these losses does not depend upon the condition of secondary load of the transformer. In all loading condition, these are fixed.

What is copper loss and iron loss?

The difference between iron loss and copper loss is as follows: Iron loss: This is defined as the loss that is caused due to the alternating flux in the core of the transformer. Copper loss: This is defined as the heat that is produced by the electrical currents in the conductors of transformer windings.

Why are core losses are assumed constant and copper losses variable in a transformer?

Out of these losses core loss is constant whereas copper loss is variable. The reason behind core loss being constant is that hysteresis loss and eddy currentloss both are dependent on the magnetic properties of the material used in the construction and design of the core of the transformer.