Controlled slowing or stopping of a motor and its driven load is as important as starting in many applications like cranes and electric traction. Sometimes electric braking is better than other breaking systems due to its greater economy and absence of brake wear. Therefore, electric braking of dc motors Read more…
Hi friends, in this article, I am going to discuss about the lux meter woking principle and its application. We have to measure light in many tasks. For this, the Lux meter should be used. To measure the light accurately, a lux meter is a very suitable device. It Read more…
Types of Errors in Transducers The errors in transducers occur because they do not follow, the input-output relationship given by qo = f(qi) The error can be expressed in terms of either input or the output quantity. Four types of errors in transducers which occures usually are as Read more…
There are many ways for measurement of a physical quantity. While selection of transducers, how to select a transducer for a particular application, following points should be kept in the mind. Unfortunately most transducers are not sensitive to just one quantity. If measurements are to be made under conditions Read more…
Characteristics of Transducers While choosing a transducer for any application the input, transfer and output characteristics of transducers have to be taken into account. Input Characteristics of Transducers Type of Input and Operating Range The foremost consideration for the choice of a transducer is the input quantity it Read more…
When two metals of different work functions are placed together, a voltage is generated at the junction. This generated voltage is proportional to the temperature and this junction is known as Thermocouple. Working Principle of Thermocouple Type Instrument In a thermocouple type instrument, the electrical current to be Read more…
Hi friends, in this article, I am providing you some basic information about Brushless DC motor. With the help of this information you can easily understand the brushless dc motor working principle. Unlike a conventional dc motor, a brushless dc motor has an “inside-out” construction, that is, the field Read more…
The most common schemes employed for the protection of a three-phase generator stator windings from earth faults phase-to-phase faults make use of circulating current principle. In these protection schemes, currents at the two ends of the protected section are compared. Under normal conditions, these currents are equal became different Read more…