Humankind has become extremely dependent on electricity, without it we can’t run the household, keep on working, or do business.…
Figure 9 shows an insulated coil whose terminals are connected to a sensitive galvanometer (G). There is a bar magnet, AB,…
In Figure 1.40, the exact voltage drop is AH instead of AG. During calculation of approximate voltage drop, AG has already been calculated. If GH is being…
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…
Figure 1.35 Open Circuit Test From this test, we can determine core loss and no-load current (I0) of the transformer. Figure…
It is required to connect a second transformer in parallel with the first transformer if the load exceeds the rating…
The ratio of output in watts to input in watts is called commercial efficiency of a transformer. Distribution transformers are used for…
INDUCED EMF An emf is induced in the conductor either (i) dynamically or (ii) statically. In the first case, the…
Figure 1.19 shows Buchholz relay having two elements mounted in a small chamber. It is located in the pipe connection…