Articles on Dc Generator




Working Principle of a DC Generator

The D.C generator converts mechanical energy into electrical (D.C) energy. The generator is usually coupled to a prime-mover.....


E.M.F Equation of DC Generator

E.M.F Equation of DC Generator is given by : Let,  = Flux per pole in Weber.  Z  =  Total number of armature conductors.....


Types of DC Generator

Based on the methods of interconnection of windings the following types of dc generators are available. (i). Separately .....


Methods of Improving Commutation

There are two methods of improving commutation i.e. of making current reversal in the short-circuited coil as spark-less as possible. They are..... 


Lap and Wave Winding

In lap winding, the finishing end of one coil is connected to a commutator segment and to the starting end of the adjacent coil is situated under the same pole.....


Characteristics of Separately Excited DC Generator

It shows the relation between no-load generated e.m.f. Eₒ and the field current  at a given speed. It is also known as Magnetisation characteristics or.....


Characteristics of DC Shunt Generator

The generator is rough up to its rated speed.  Now we notice some voltage in  voltmeter, though IF is zero.  This is due to residual magnetism present in the poles.....


Characteristics of DC Compound Generator

A shunt generator can be made to supply constant voltage by adding few turns in series with the armature. These turns are so connected as.....


Parallel Operation of DC Generator - Conditions & Advantages

Let's see the two compound generators running in parallel. Because of the rising characteristics of the usual over compounded generators.....


Efficiency of DC Generator

It may be defined as ' the ratio of output in watt (or KW) to the input in watt (or KW).....




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