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..............
1367I 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 3435On 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 9810Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?
1731Why 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 5856avr is an automayic voltage regulator ... it regulates voltage before it synchronise with grid after synchronisation it regulates power factor why....
7 6913how to calculate the current carrying capacity of a conductor. How it is related to diameter of cable or conductor
3 12925How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?
BARC,
1468where is the need for short circuit test for 3 see is required and why? can you explain in brief with application
1399I 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 3851Post New Electrical Engineering Questions
Difference between shunt, PMG and AREP excitation. Which is the most reliable between PMG and AREP.
Write the force balance equation of ideal dashpot element.
what is the use of Auto re-closer?
what is the differences between microprocessor and general purpose computer
If not into production, how far did you follow the design and why did not you see it into production?
What is the test block protection relay if any body know plz explained
How to Calculate The sag of OPGW in Transmission Line???
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?
What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?
After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.
in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?
What is gross error?
Transmission through a short line depends on
Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.
Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?
