Elecrical Knowledge

          same  frequencies, a fixed part of the electronic instrument to convert the power from one circuit into another circuit, called a transformer, increases or decreases the voltage and decreases or decreases in the current with it. The value of the power remains the same during this process. That does not change the Transformer works on the rule of electrodynamic induction of Faraday Principle:               Transformer works on the theory of electromagnetism and electromagnetic induction. When two claws are held near them. And if one passes through AC coefficient, the second coil also has an emf indusus which is at the flux produced in the first coil. Based Formation:             The main part of the transformer is the core and the wing 1.Cor:             Transformer's core combustibles are made of slim straps of silicon steel, these stripes are laminated. These strips are more resistant to straps and less hysteresis losses. The thickness of these stri

The formation of this starter has been shown in the figure. We have seen that DC motors can not be combined with direct supply because the motor is damaged. To avoid this, the starter is used. We use the DC stator And we will now know about the DC4 point starter                                Its composition has been shown as shown in the figure. We can see that one end of the DC solution is given in overloaded relay, and given in the handle. It is arranged in accordance with the order of the motor of the motor through Resistance. .and the other end of the DC clearway is given directly to the other terminal of the motor, ie, the starter is attached to the motor series. The nvc coil is also found in the stator Holds the handle on the motor coming to the fullspeed                      Now when the collapse of the current supply falls, the magnetism of the nvc coil will be lost and the handle will come back into a closed position with the help of spring and the handle will not tu

                                 It can also be called a three point starter. Its structure is shown in Figure. To start the motor, the handle is moved from off position to the first contact position. The total obstacle is in the armature circuit, the field connection is connected directly to the supply through a volt coil. Comes in as soon as the speed of the motor increases in the same way as the archete back emf emits and decreases in the value of current Now the handle is moved to the second step. Again this type of function will be done eventually at the last step of the handle. This time the armature will connect directly to the supply and this time the handle does not come with a no-volt coil. The magnet will hold the handle in the walt coil, and the motor will not need to hold the handle to continue and the motor will rotate in full speed.                   Mechanism of 3 points Starter is done so that if the magnetism of the nvc coil is exhausted for any reason, and the

 Battery charging:     Battery charging means that the secondary cell density is less than 0.8 or it is charged immediately to recharge the battery.                       Generally, DC to charge secondary cell. Is used but every space is in DC Since there is no getting it, AC needs to be converted into DC and then the battery is charged. This type of tangor bulb type rectifier is usually used, The motor generator set is used for this method where the battery is charged.                      For this, the connection of the positive terminal of the DC source should be done with the positive terminal of the battery and the connection of the negative negative terminal of the source should be done with the negative negative terminal of the battery. If the polarity succeeds, then the DC ends the two ends of the source connecting the battery Negative wires submersing in acidic water or submerged water will have a higher level of bubbles. So the concept of polio Sector.              

                            When the motor comes in to start, the resistance of the armature will be zero, since the starting current will pass through the armature in a very large amount. However, if this motor is connected directly to the line, then in that case, it may get very much current in the beginning. That fuse flies and damages to the motor's commutator and also damages the carbon brush                Eg. 440 v, 3.75kw. The idea of ​​the motor's resistance to the order is 0.25 ohm and the value of the flower load current is 50 A. Now if the motor is directly started on the line, then in the case of the motor will take 440 / 0.25 = 1760A The value of which will be 35.2 times the load current.                 In order to avoid this, the resistance in the series of Artefacts is introduced only for start of 5 to 10 seconds for which the start of the start-up value is in the limit and the resistance is removed when the motor comes in full speed. The motor can be p

                                           Sometimes sparking occurs on the generator or on the commutator of the motor, the reasons are shown as follows Rubbed brush The grade of brush is false The brush is sticky The pressure on the brush should not be exactly the same The surface of the computator is rough The brush is not suitable for bending The space between the brush is not the same Mike has stepped out of the segment The condition of the brush is wrong There is a meaning fault in the armature Artychat being short Overload is also responsive ગુજરાતી માં માહિતી માટે અહીં ક્લિક કરો  हिन्दी में जानकारी के लिए यहाँ क्लिक करे  

         The output voltage of the generator is decreasing or increasing in the proportion of loads generated over the generator, so it needs to be kept constant so that the output voltage of the generator needs to be kept in control, which can be explained by two ways as follows. 1. By changing the field current and 2. By changing the speed of the generator 1. By changing the field current                                                 In this type of way, the value of field curtants is changed by placing variable resistance in the field of field sounding. Changes in the value of the field current will also change in the magnetic field and therefore it is possible to edit the desired amount in the output voltage. 2. By changing the speed of the generator:                                                 In this type of way the speed of the generator is changed, now the generator output is based on the speed of the generator, increasing the voltage of the speed of the spe