Figure 1.25(a) shows the transformer during no-load condition. The flux Φ is set up in the core. When the secondary is loaded…
For an ideal transformer, we have assumed that there are no core losses and copper losses. For practical transformers, these…
Figure 1.30 shows a transformer having resistances R1 and R2 of primary and secondary windings respectively, and leakage reactances X1 and X2 of primary and secondary windings respectively.…
There are two types of windings usually used in a transformer. The winding receiving electrical energy is known as primary…
With constant voltage applied in primary, the secondary terminal voltage will decrease due to voltage drop across its internal resistance…
A transformer may be step up or step down. If the output voltage is greater than the input voltage, the…
Consider the rotating magnetic field as equivalent to physical rotation of two stator poles N1 and S1. Consider an instant when…
Eduction motor works on the principle of electromagnetic induction. When a three phase supply is given to the three…
Armature windings are classified into two different types namely i) Closed type winding ii) Open type winding. 1.1 Closed Type…
Consider the field magnetization characteristics of a d.c. shunt generator shown in the Fig. 1. Fig. 1 Concept of critical…