It is seen that, the e.m.f. induced in the conductors is always sinusoidal and commutator converts this sinusoidal e.m.f. to…
Before analysing the various characteristics of motors, let us revise the torque and speed equations are applied to various types…
Consider the d.c. shunt generator shown in the Fig. 1. The internal characteristics is E Vs IL while the external characteristics is…
The conductors which are responsible for producing demagnetizing and distortion effects are shown in the Fig.1. Fig. 1 The brushes…
Kapp had designed a diagram shown in Figure 1.42 to determine the regulation at any power factor. The description of…
Two types of losses occur in a transformer: Core loss or iron loss occurs in a transformer because it is…
Full-load voltage of a transformer can be expressed as a fraction of the full-load terminal voltage. Let I1fl be the full-load primary…
Polarity testing of transformers is vital before connecting them in parallel. Otherwise, with incorrect polarity, it is not possible to…
1. Direction of Rotation of Motor The magnitude of the force experienced by the conductor in a motor is given…
Consider two compound generators 1 and 2 running in parallel as shown in the Fig. 1. As the voltage characteristics…