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Traction System
What do you mean by traction system, What type of traction system is used in electric train.
anindam_07
- Jul 20th, 2008
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...
tiwarianjanikumar
- Jul 4th, 2008
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
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Tranmission and Distribution
Why are we employing star type transformer at transmission end and delta type transformer at receiving end?
luckwithme
- Jul 11th, 2008
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...
chinnakalupukuri
- Apr 11th, 2008
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...
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Describe How energy is stored in a inductor on electronic level
George
- May 14th, 2007
Energy is stored in an inductor in the form of a magnetic field.
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Why the generators are made such that they generate only sinusoidal wave?
rahulr30
- Jun 8th, 2008
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.
cvk
- Oct 5th, 2007
It is by the natural construction that a sine wave form is generated.
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Signals and GSM
1-what is signal?2-What is Gsm?3-What about AMPS?4-What EDGE?5-What is GPRS?6-What is Ciphering?7-Difference Between Noise and Attenuation?
rahulr30
- May 30th, 2008
GSM-The Global System for Mobile Communications (GSM)GPRS-General Packet Radio ServiceEDGE -Enhanced DataRates for GSM Evolution
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What is Particle Swam Optimisation?
s.v.vijayaraj
- Apr 21st, 2008
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...
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How to find the terminals in SCR? Also in BC327 transistor?
s.v.vijayaraj
- Apr 19th, 2008
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...
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Magnetic Levitation
What is Magnetic Levitation ?How MAGLEV (Trains based on Magnetic Levitation) works ?
arunkpkrn
- Apr 15th, 2008
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.
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Potentiometer and Rheostat
What is difference between potentiometer and rheostat?
bittu123
- Nov 9th, 2011
Rheostate is variable resistance has only two leads. potentiometer differs in working principal as it has three leads and works on potential divider method
s.v.vijayaraj
- Mar 31st, 2008
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.byS.V.Vijayaraj
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Capacitive Load
Why we cannot use the capacitive load?
haveasafeday
- Feb 5th, 2008
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.
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Why less loss occurs when we use DC supply than AC supply?
er.vikasharma
- Jan 5th, 2008
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.
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DC & AC motor
Whats happens when we give DC to a induction motor
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haveasafeday- Member Since Feb-2008 | Feb 5th, 2008
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.
haveasafeday
- Feb 5th, 2008
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.
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Electrical Engineering Interview Questions
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