Steam Turbine In a power generating plant, the steam turbine is a favorite primary mover. The capability of the steam turbine can be from 5 megawatts – 2000 megawatts. Working Principle of Steam Turbine- A practical turbine normally has two important parts nozzles and blades. The nozzle is a tool installed at a turbine’s steam inlet. The high-temperature, high-pressure… Read More »
LINEAR VARIABLE DIFFERENTIAL TRANSFORMER (LVDT) : It is a type of inductive transducer which is used to measure the displacement. The inductive transducer means they are changing the inductance of the coil due to the change in inductance the non-electrical quantity is converted into electrical quantity. The LVDT(linear variable differential transformer) is used measure the displacement and this… Read More »
What are the important parts of DC machine? Construction wise DC machine has four main parts namely field magnet, armature, commutator and brush. Actually a DC machine means a DC motor or a DC generator constructionally both are same. If rotor of a DC machine is rotated through means of a prime mover. It produces electricity at armature… Read More »
Construction of single-phase transformers- A single-phase transformer consists of two winding, called primary and secondary windings mounted on a magnetic core. To confine flux to a definite path magnetic flux is used. Transformer cores are made from thin sheets (called lamination) of high-grade silicon steel. The laminations reduce eddy-current loss and the silicon steel reduces hysteresis loss. The… Read More »
Shaded pole starting of a single phase induction motor- The single phase induction motors are self starting by providing additional flux by some additional means. Now we depending upon these additional means the single-phase induction motor classified as shaded pole induction motor.The single phase induction motors are self starting by providing additional flux by some additional means. Now we depending… Read More »
The power losses in an induction motor fall in the same general classification as in any dynamo. There are electrical losses due to heat produced by the current in the stator and rotor winding, which is called copper loss, magnetic losses in the iron due to hysteresis and eddy currents, which is called the core losses, mechanical losses… Read More »
Unlike the direct current motor, in an induction motor there is no electrical connection to the rotor, circuit and therefore, the same condition exists as in the DC motor i.e., the rotor conducts carry current in the stator magnetic field and thereby have a force exerted upon them tending to move them at right angle to the field.… Read More »
Alternator is an electrical dynamic device which converts mechanical energy to electrical energy form. According to faraday’s 1st law either magnet or armature must be in motion condition to induced emf. Alternator is also known as synchronous generator. We can categorize Alternator in many ways, but according to the design of field system it can be divided into… Read More »
The D.C. generators and D.C. motors have the same general construction. Any d.c. generators can be run as d.c. motor and vice versa. A d.c. machine consists of two main parts- Stationary parts-It is designed mainly for producing a magnetic flux. Rotating part- It is called the armature, where mechanical energy is converted into electrical (electrical generator) or… Read More »