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…
The generating station either of d.c. type or of a.c. type, normally consists of number of smaller generators operating in…
We have seen that there are number of armature conductors, which are connected in specific manner as per the requirements,…
a) Conductor : It is the actual armature conductor which is under the influence of the magnetic field, placed in the…
An electrical machine is a device that convert the electrical energy into mechanical energy and vice versa. Transformer is also…
When a d.c. motor or an induction motor is loaded, the speed of the motors drops. This is because the…
Q.1 Corona is- A. Partial breakdown of air B. Complete breakdown of air C. Sparking between lines D. None of…