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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............
1820I have a table fan of Rallifan Make. When I overhauled it I found a stator winding and an aluminum die cast rotor. So it is supposed that it is a 1 phase induction motor. But there are only two terminals coming out and there is no capacitor. Can any one tell how this motor works? or which type of this motor is?
1 4274On the secondary side of a distribution transformer, we use 1c x 630 sq mm cable. Why dont we use 4 core cables instead of 1 core cables on the secondary. Why we use aluminium cable glands on the outgoing instead of brass cable glands?
2 11039Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?
2257Why we transmit the power at the voltage in the multiple of 11 or 1.1 like 11kv, 22kv, 66kv, 132kv...... some one told me that it is due to fomr factor 1.1 of sine wave. its fine but while transforming we can choose any voltage, so why only multiple of 1.1 there also.......? plz tell me.
7 7777avr is an automayic voltage regulator ... it regulates voltage before it synchronise with grid after synchronisation it regulates power factor why....
7 9051how to calculate the current carrying capacity of a conductor. How it is related to diameter of cable or conductor
3 14476How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?
BARC,
1983where is the need for short circuit test for 3 see is required and why? can you explain in brief with application
1956I want to know in body earthing which material can be use either copper plate or GI plate please guide us which is best option.
3 5158Post New Electrical Engineering Questions
how choose conductor&depending upon load
single phase power supply give to separate one steel coup with water, what reaction create
What are the various types of BUSBAR Schemes? explain each
how technical is calculated in 11kv line and lt line
The screw thread commonly used for transmission of motion is one of the following types of threads
What is critical disruptive voltage?
Briefly describe means used by electricity suppliers to influence the flow of active and reactive power in power networks (one for each type)?
Draw the vector diagramme for Asynchronous Induction Generator at noload,half load and fullload.
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
how is the magnetic current test is different in delta-star and delta delta transformer.
Pl.brief me any electrical major fault you have rectified.
why they were using TRIAC instead relay in some controllers and what is the advantages.
i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400
CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor
Why control of DC motor is simpler?
