Electrical Engineering Interview Questions

Delta connection give a value equal three times than star connection.

this is engine starting sound when we start D.G. sets.

the electric traction system is the sysatem by which traction motor is moved with loads.now a days ac 25kv,50hz.1-ph system is universaly adopted for traction movement.power comes from ohe equipment v...

traction systemmeans the system which provide the means of transportationtraction may be of a.c or d.c motor employes a.c & d.c motor respectivly

Regulator : Is a control the current using resistance, u can adjust the power output (min to max).

Stabiliser : Stabiliser is a stable the constant power output depends on rating of a stabiliser

Cotinuing with earlier answer I want to add something that regulator is nothing but a part of stabiliser.

Delta star transformer used in distribution purpose because of earthfault on star side do no reflect on delta side of winding. Zero phase current is eleminated in delta side of transformer and another...

by having the y-type on receiving end, we can get 3-phase,3-wire supply or 3-phase,4-wire supply.we can also get 1-phase supply.b'coz in y-type we have neutral point.whereas in delta type transfor...

energy stored in an indoctor = (1/2)L* I2

Energy is stored in an inductor in the form of a magnetic field.

Sine wave is best suited for commercial generation purposes because it will have a single unique frequency. I f we genrate a square wave ( by using concentrated windin in alternator) the problem of harmonics would arise.

It is by the natural construction that a sine wave form is generated.

GSM-The Global System for Mobile Communications (GSM)
GPRS-General Packet Radio Service
EDGE -Enhanced DataRates for GSM Evolution

Introduction Particle swarm optimization (PSO) is a population based stochastic optimization technique developed by Dr. Eberhart and Dr. Kennedy in 1995, inspired by social behavior of bird flocking o...

           It is simple to find the teriminals in the SCR and Transistor, Where the SCR is in Flat package Transistor in metal can package.Also the th...

Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. But train operating on Magnetic levitation is unknown to me.

Rheostate is variable resistance has only two leads. potentiometer differs in working principal as it has three leads and works on potential divider method

The difference between potentiometer and rheostat is that the potentiometer can be used for high range of voltage and current but the rheostat cannot be used for high range of voltage or current. Size of the potentiometer is large, rheostat is less.
by
S.V.Vijayaraj

capacitive load means a load with leading power factor which is very rare in electrical equipment.though syncronous motor is used as a capacitive load.

Frequency of DC system is Zero. how can f is there?

in DC, frequency is constent not zero,we say Skin effect & no corone loss occur is the main reason of less losses in DC then AC supply.

In dc there is no rotating magnetic flux which is required to rotate ac motor. if we apply dc to ac motor, it may burn.

firstly DIV means division. know 100V/DIV or 50A/DIV are usually the scales that are read on the OSCILLISCOPE. so if you see a waveform and you  have the scale set to 100v/DIV, it means that if y...

Continuing ur answer........ Scott conection is used to convert 3 phase supply to 2 phase and vice versa

Scott conection is used to convert 3 phase supply to 2 phase.