Interested to Buy Any Domain ? << Click Here >> for more details...
IN Electric train which type of motor is used,for what reason they uses?
- 3 Answers
- 10353 Views
- L&T, I also Faced
- E-Mail Answers
Answer Posted / s
Theoretically it is series motor ,in practical it is compound motor having high torque
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?
why we use single core 630mm2 cable for transformer secondary side
What is force on a conductor in a magnetic field ?
1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.
what is the main parts of transformer? how it is functioning? pls giv the ans briefly.
Name the component u would expect to find in a switchgear assembly?
what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero
How to minimize the eddy current losses?
Dear all, how we select the cable size according to current with or without including different correction factor , is there any direct method for sizing of cable...
A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.
what is the star delta connetion and how can do it a three phase motor with control witing with picture
what is x'mer ,isolation x'mer & yltra-isolation x'mer?????
why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?
Explain about technical and non technical losses in distribution system?
what will be project cost for 100 kv transformer connection under oyt scheme.
