2020-05-16 21:16
What Is Auto Transformer Starter?Starter is a device which limits the starting current for the smooth starting of motor.Similarly with the auto transformer starter starting current controlle… Read More
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2018-02-23 19:30
Why electricity is being transmitted in multiple of 11?Have you ever wondered? why we use only 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV which are multiples of 1.11(we can say m… Read More
2018-02-23 19:11
01) Two 100W, 200V lamps are connected in series across a 200V supply. The total power consumed by each lamp will be in Watts :-A) 25 WattsB) 50 WattsC) 100 WattsD) 200 WattsAShow Answer02)… Read More
2017-08-20 20:44
01) Two 100W, 200V lamps are connected in series across a 200V supply. The total power consumed by each lamp will be in Watts :-A) 25 WattsB) 50 WattsC) 100 WattsD) 200 WattsAShow Answer02)… Read More
2017-08-18 04:51
Differences Between Alternator and GeneratorAlternator and Generator both are electro-mechanical machines which converts mechanical input to electrical output i.e., electrical energy.Though… Read More
2017-08-17 08:39
Comparison of Gravity Control and Spring ControlGravity control or Spring control both are comes under the category of "controlling torques" of an electrical measurement instrument.Before go… Read More
2017-08-17 06:23
Factors Affecting Hydroelectric Plant LocationSite selection of Hydroelectric power plantHydroelectric power / Hydro-power plant is one of the eco-friendly power generation system… Read More
2017-08-13 19:24
Differences Between Gravity Control and Spring ControlGravity control or Spring control both are comes under the category of "controlling torques" of an electrical measurement instrument.Bef… Read More
2017-08-13 08:53
Transfer Function of Control SystemDefinition: Mathematically it is defined as the ratio of Laplace transform of output (response) of the system to the Laplace transform of input (excitation… Read More
2017-08-12 20:19
Star to Delta and Delta to Star Conversion(Wye-Delta Transformations)It is easy to calculate equivalent resistance of resistors which are in either parallel or series.Sometimes we may face d… Read More
2017-08-02 09:36
Factors Affecting Hydroelectric Plant LocationHydroelectric power / Hydro-power plant is one of the eco-friendly power generation systems.It has less running cost and high efficiency (a… Read More
2017-06-26 19:45
Line to Line Fault Definition, Fault Current CalculationWhat are the points to be covered?What is line to line fault?How line to line fault occurs?Fault current in line to line fault.Ca… Read More
2017-06-24 13:16
Why electricity is being transmitted in multiple of 11?Have you ever wondered? why we use only 11KV / 22KV / 33KV / 66KV / 110KV / 230KV / 440KV which are multiples of 1.11(we can say m… Read More
2017-06-24 00:41
Difference between Squirrel Cage and Slip Ring Induction MotorOn our electrical learning portal we have posted articles based on comparisons and differences.In this article we are going to d… Read More
2017-06-21 22:06
Regulation by Zero Power Factor ( ZPF) method of Alternator:During the operation of the alternator, resistance voltage drop IaRa and armature leakage reactance drop IaXL are… Read More
2017-06-21 21:07
An auto transformer is a electrical transformer having only single winding which acts as both primary and secondary,so in input and output connected to shared single winding.Why we need to g… Read More
2017-06-21 20:32
Three Phase System Advantages In modern power generation, transportation, distribution we use poly-phase system over single phase system.In poly-phase AC system it might be two … Read More
2017-06-19 19:20
Single Phase Induction Type Energy Meter Construction,Working Principle,Operation,Creeping,Torque EquationThe measurement of energy is the same process as measurement of power except that th… Read More
2017-06-18 18:26
Current Differential Relay Working || Types of Differential RelaysWhat is differential relay?In the over-current relays, a current is sensed but such relays are not very sensitive as these r… Read More
2017-06-18 11:58
Creeping in Energy Meters: In some energy meters a slow but continuous rotation of the disc is obtained when the pressure coils are energized and there is no load current passing throug… Read More
2017-06-14 17:41
LEAD LAG COMPENSATION IN CONTROL SYSTEMIn this post we are going to learn about types of compensations, why compensation of control system is required, lead and lag compensation in control s… Read More
2017-06-10 19:02
Single Phase Induction Type Energy Meter Construction,Working Principle,Operation,Creeping,Torque EquationThe measurement of energy is the same process as measurement of power except that th… Read More
2017-05-26 17:23
Direct Online StarterIn the previous post we have learned about Star Delta Starter. In this post we are going to learn about Direct Online Starter or DOL starter.Why We Use Starter?A starter… Read More
2017-05-10 13:42
In our electrical edition already we have discussed synchronous motor working principle ,why synchronous motor is not self starting? etc.The most important thing is why mostl… Read More
2017-03-30 12:51
Principles of Electronics by V.K. Mehta and Rohit Mehta Pdf-Free DownloadAs of our free electrical engineering free ebook series today we are sharing a new pdf book "Principles of Electronic… Read More
2017-02-24 06:15
Two Watt Meter Method For Power MeasurementTwo watt meter method is used for measuring power in 3 phase 3 - wire star or delta connected systems either with balanced or unbalanced load. Let… Read More
2017-02-21 09:33
Electrical Bus - Bar And Types Of Bus - Bar Arrangements And Its Advantages And DisadvantagesWhat is a bus bar?A bus - bar is a conductor or group of conductors and it collects electric ener… Read More
2017-02-16 17:00
Star - Delta Starter To start a large induction motor we use star - delta starter because large induction motors(cage type) with delta connected stator when started directly on line it… Read More
2017-02-15 13:24
Electrical Braking Of DC MotorWe have two types of braking they are mechanical braking and electrical braking. We prefer electrical braking to stop a dc motor rather than mechanical braking… Read More
2017-02-06 18:51
Torque Equation And Torque - slip Characteristics Of Three Phase Induction MotorTorque - slip characteristics shows the variation of torque of 3- phase induction motor with the change in sli… Read More
2017-02-04 09:44
Instrument TransformersDefinition of Instrument TransformerIn heavy currents and high voltage a.c. circuits, the measurement can not be done by using the method of extension of ranges of low… Read More
2017-01-29 14:08
Three phase energy meter working,construction An energy meter is used to measure the energy consumed in the kilowatt hours. This is used in each and every house and industry… Read More
2017-01-29 14:06
Operation,Types And Characteristics Of HRC FuseFuse is a common switch gear device which we see even at our homes. It is used to protect a device or circuit from over currents. For hou… Read More
2017-01-29 10:50
Differences between electrical degree and mechanical degreeMany people get confused about what is electrical degree and mechanical degree. Well, to get a clear idea about this we have provid… Read More
2017-01-28 08:16
GENERATION OF ELECTRICAL ENERGYEnergy exists in different forms in nature but the most important form is the electrical energy.Now a days usage of electricity is very high it has become a ba… Read More
![Electrical Machinery [ Electrical Machines ] By Ps Bimbhra Pdf Download](https://cdn.blogarama.com/images/posts_thumbs_site_id/9660/965978-3292983796.w320.jpg "Electrical Machinery [ Electrical Machines ] By Ps Bimbhra Pdf Download")
2017-01-17 12:13
You all know we recently launched free electrical engineering pdf books to all. In this post we are sharing a very good book on electrical machines by ps bimbra , he is a very good author of… Read More
2017-01-12 14:37
Welding Transformer Working Principle and Applications Now a days we have many ac power supplies. So the usage of welding transformer has significant role in welding compared to a motor… Read More
2017-01-12 14:35
Operational amplifier as integrator and differentiatorOperational amplifier which is called also called as op-amp has a key role in many electronic applications due to its special characteri… Read More
2017-01-11 13:07
Conversion from binary code to gray code and gray code to binary code In this post let us see conversion from binary code to gray code and gray code to binary code.Purpose for convertin… Read More
2017-01-11 13:03
Synchronization of alternator and methods of synchronization of alternatorWhat is meant by synchronization of alternator?Connecting a group of alternators parallel to a bus bar and the alter… Read More
2017-01-11 13:02
Working principle, construction , torque equation and extending range of electrostatic type instruments Hello readers, &nbs&hell…Read More
2017-01-07 09:47
Speed Control Methods Of DC MotorDC motors brought us revolutionary changes in industrial and domestic applications.This all because of an unique feature of DC motors i.e, speed controlling… Read More
2017-01-04 18:29
Voltage regulation of synchronous machine by zero power factor method or potier methodHello everyone,Today in this post I am going to discuss about voltage regulation of synchronous machine… Read More
2017-01-03 14:04
Calculation of voltage regulation of synchronous machine by M.M.F method or ampere turn method In this post let us see how to calculate voltage regulation of synchronous machine by M.M… Read More
2017-01-02 18:42
Voltage regulation of synchronous machine by EMF method or synchronous impedance methodIn this post we are going to learn how to calculate voltage regulation of synchronous machine by EMF me… Read More
![Voltage Regulation Of Synchronous Machines [Alternator] By Direct Loading Test](https://cdn.blogarama.com/images/posts_thumbs_site_id/9660/965978-508476839.w320.jpg "Voltage Regulation Of Synchronous Machines [Alternator] By Direct Loading Test")
2017-01-02 15:01
Voltage Regulation Of Synchronous Machines [Alternator] By Direct Loading TestToday in this post we are going to learn what is Voltage regulation of synchronous machine and different methods… Read More
2017-01-01 17:43
Voltage Regulation Of TransformerHello everyone,In this post we are going to discuss about Voltage regulation of a transformer.Read here : Differences Between Core And Shell Type T… Read More
2016-12-30 18:56
All Day Efficiency of Transformer/ Distribution Transformer All Day EfficiencyIn our previous articles we have discussed transformer working,construction etc.To day we discuss one of the imp… Read More
2016-12-30 16:15
No Load Test on Induction MotorThere are three types of tests to be performed for checking the performance of an induction motor1.No load test or open circuit test.2.Blocked rotor test or sh… Read More
2016-12-26 12:58
Power SystemS Book by CL Wadhwa PDF Free DownloadAs our part of free ebooks for electrical engineers today we are uploading Power System book by C L Wadhwa it is a very important book… Read More
2016-12-22 13:18
Synchronization of Three-Phase Alternators:The conditions to be satisfied for synchronization of three phase alternators are same as that for single phase alternators.As discussed earlier th… Read More
2016-11-14 03:38
A Text Book Of Electrical Technology By BL Theraja and AK TherajaNow you can read electrical technology by bl theraja and ak theraja pdf by downloading into your mobile/PC in pdf… Read More
2016-10-30 08:50
What Is Unijunction Transistor (UJT) ?The unijunction transistor, abbreviated UJT, is a three-terminal, single-junction device. The basic UJT and its variations are essentially latching swit… Read More
2016-10-29 18:44
In the previous articles we have seen basic operation and principle of a chopper.In this tutorial we will see Principle of Step-Down Chopper (Buck-Converter) with a neat sketch of circu… Read More
2016-10-29 18:39
What Is Called A DC Chopper ? A d.c. chopper is a static device (switch) used to obtain variable d.c. voltage from a source of constant d.c. voltage.In the right below figure you can se… Read More
2016-10-25 05:41
In this article differences between power transformer and instrument transformer are discussed.Current transformer and Potential transformers come under instrument transformers.Differen… Read More
2016-10-11 14:45
Let us have a comparison between two major type of electrical measuring instruments they are moving coil (MC) and moving iron (MI) instruments.In this article all major differences betw… Read More
2016-10-07 16:45
In previous tutorial on Moving Iron Instrument Operation construction & working principle was discussed. In this post moving iron instrument torque equation will… Read More
2016-10-07 16:43
Power Transformer Cooling Methods The transformers get heated due to iron and copper looses occurring in them. It is necessary to dissipate this heat so that the temperature… Read More
2016-10-07 12:09
Moving Iron Instruments or MI InstrumentsIn our previous article we have discussed PMMC Instrument Working Opeartion. In this tutorial on Moving Iron Instrument Working Operat… Read More
2016-10-05 19:43
What Are The Differences Between Core And Shell Type Transformers In our previous articles we have discusses about differences between lap,wave winding this tutorial we are sharin… Read More
2016-09-29 06:28
Principles of Power Systems By V.K Mehta PDF Free DownloadNow you can read & learn electrical power systems in offline.You can download Principles of Power Systems By V.K Mehta. Thi… Read More
2016-09-27 21:06
Power Factor | Calculation and Power Factor Improvement MethodsWhat Is Electrical Power Factor ?The cosine of angle between voltage and current in an a.c. circuit is known as power fact… Read More
2016-09-27 20:20
Instantaneous Relay Working Operation What Is Instantaneous Relay ?An instantaneous relay is one in which there is no time delay provided intentionally. More specifically ideally there… Read More
2016-09-27 05:29
Hysteresis Motor Construction & Working Hysteresis Motor: Single-phase cylindrical (non-salient-pole) synchronous-induction or shaded.pole motors are classed as hysteresis motors. A… Read More
![EMF Method Or Synchronous Impedance Method | Voltage Regulation Of Synchronous Generator [Alternator]](https://cdn.blogarama.com/images/posts_thumbs_site_id/9660/965978-1939867869.w320.jpg "EMF Method Or Synchronous Impedance Method | Voltage Regulation Of Synchronous Generator [Alternator]")
2016-09-26 21:15
Voltage Regulation of Synchronous Generator [Alternator] By EMF Method or Synchronous Impedance MethodEMF method: This method is also known as synchronous impedance method.Here the magnetic… Read More
2016-09-20 22:07
What Are ? Harmonics In Synchronous MachinesHarmonics: When the uniformly sinusoidally distributed air gap flux is cut by either the stationary or rotating armature sinusoidal emf is induced… Read More
2016-09-18 06:22
Back EMF | Back EMF Significance in DC MotorWhat is Back EMF in DC Motor?We know whenever conductor cuts the magnetic field,e.m.f will induce in conductor.This also applies for conductors in… Read More
2016-09-08 15:57
Long transmission lines,Analysis By Rigorous methodWhat are called as Long transmission lines?Answer: When the length of an overhead transmission line is more than 150 km and line volta… Read More
2016-09-06 19:37
Analog Electronics Book Bakshi and Godse Free Download PdfWe at ElectricalEdition.Com Always try to help electrical & electronics engineering students by providing articles,PD… Read More
2016-09-05 08:13
Barkhausen Criterion of OscillatorsConsider a basic inverting amplifier with an Open loop gain A.The feedback network attenuation factor B is less than unity. As basic amplifier is inverting… Read More
2016-09-03 09:45
We have discussed about construction & working of DC machine. In this article condition for maximum efficiency in DC machine will be derived. Condition for Maximum E… Read More
2016-03-29 19:56
In the previous article we came to know that synchronous motors are not self starting so to make them start automatically we should add some tweaks.We should rotate rotor near to t… Read More
2016-03-29 19:45
Differences Between Synchronous and Induction MotorWe have two major types of AC motors.They are synchronous and induction motor,synchronous motor runs at synchronous speed where induct… Read More
2016-03-29 19:34
EMF Equation of an AlternatorWe know Synchronous Machines generates E.M.F.the amount of EMF generated can be calculated using below simple derivation.Consider followingΦ= flux per pole i… Read More
2016-03-27 09:24
Blocked Rotor Test On Induction MotorThis test is also called as Locked Rotor test or short circuit test.In the previous articles we had discussions on construction of induction motor,workin… Read More
2016-03-26 13:01
V-Curves and Inverted V-Curves of Synchronous MotorA synchronous motor is a double-excited machine, its armature winding is energized from an a.c source and its field winding from d.c… Read More
2016-03-25 06:25
Induction Motor Braking Regenerative Plugging Dynamic Braking of Induction MotorInduction motors are most widely using motors in present days for domestic and industrial purpose.But con… Read More
2016-03-25 06:06
3 Point Starter | Working & Construction of Three Point StarterA starter is a device which helps in smooth starting and running of a dc motor(mostly dc shunt,compound motors).More… Read More
2016-03-25 06:04
4 Point Starter | Working & Construction of Three Point StarterIn the previous post we have seen how does a 3 point starter works. There is only one difference in construction between &n&hell…Read More
2016-03-18 11:08
In the previous articles we discussed about DC generator working, Voltage equation of dc generator. Efficiency is a very important specification of any type of electrical machine. When we ta… Read More
2016-03-18 11:07
Everyone is saying synchronous motors are not self starting but why here we going to discuss if you don't have time to read this whole article to know why synchronous motor is not… Read More
2016-03-18 11:07
Shaded Pole Induction MotorsWe know that 'single phase induction motors are not self-starting' .To make them self starting we use capacitors,shaded poles etc.In this article we going to see… Read More
2016-03-18 11:07
The transformers are connected in parallel when the load on them is more than the rating of the individual transformers. Before going to discuss about parallel operation of single phase… Read More
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