DC generators are widely used in various applications such as electric vehicles, renewable energy systems, and industrial machinery. Among the different types of DC generators, separately excited DC generators are …
This set of DC Machines Construction MCQ focuses on objective questions based on construction of dc generator and dc motor. DC Machines Construction MCQ Question 1 The commutator segments are …
This set of DC Generator Problems with Solution focuses on problems based on EMF equation of DC Generator. DC Generator Problem 1 A four-pole generator, having wave-wound armature winding has …
A DC generator is a machine which converts mechanical energy (or power) into electrical energy (or power). The energy conversion is based on the principle of the production of dynamically …
Slip rings are small devices that have a very important role in all types of devices, equipment, and machinery that come in all sizes, from the smallest to the largest …
An amplidyne is an electromechanical amplifier with the characteristics of a rotating machine. It was invented prior to the second world war by Ernst Alexanderson. An amplidyne is a special-purpose …
In this post, we will look at the voltage and power equation of a dc motor and the condition for maximum power in a dc motor. Voltage Equation of a DC Motor …
This set of DC Generator Problems with Solution focuses on problems based on Types of DC Generator. DC Generator Problem 1 A shunt generator delivers 450 A at 230 V …
Swinburne’s test is the simplest indirect method of testing dc machines. In this method, the dc machine (generator or motor) is run as a motor at no-load and losses of …
There are several tests that are conducted for testing a dc machine (generator or motor) to judge its performance. The most important performance tests to be conducted on the dc …
What is Back EMF? When the armature of a DC motor rotates under the influence of the driving torque, the armature conductors move through the magnetic field and hence emf is induced …
Compensating Windings and Interpoles are one of the important step taken to minimize the undesirable effect of armature reaction in dc machines. Armature reaction causes many undesirable effects on a …
In a DC power plant, power is usually supplied from several generators of small ratings connected in parallel instead of from one large generator. This is due to the following …
Armature reaction in alternator is the effect of armature flux on the field flux (i. e., rotor ampere-turns). Read this article to learn more. We have already discussed the effect …
Electric Motors need maintenance regularly in order to avoid failure and prolong their lifespan. Generally, motors and motor parts should be maintained and tested at least every 6 months. Then …
The interesting thing about the parallel operation of the DC series generator is that DC series generators are not usually employed for the supply of power. Instead, DC series motors …
