Answer / sub asst.engineer

INDICTION MOTOR.

Answer / dipak kumar

It is a type of Induction Motor,Where stator of induction
motor is cut & flatened.It also links to magnetic
levation.It is being used as maglave trains.

Answer / ganesan.n

Linear motor is an induction motor which can be used for
Traction purpose too!!

Answer / mahavir jagdev

Answer No:3 is correct, it is like pening the stator winding of an induction motor and the rotor will run at synchronous speed, less the slip. The elctromagnetic field will also provide the lift. The proble comes how to guide the rotor without any mechanical friction for sideways drifting .... I believe MAGLEV trains use side magnets to guide the trains for frictionless rolling above the rail tracks.

How to calculate or formula to calculate rhe power in 2 phase system ??

0 Answers  

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A 60W,250V bulb when connected to a 230V supply will it give more light or less or will be give normal light?

3 Answers   MahaGenco,

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What is meant by reset level of the relay?

0 Answers  

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my UPS is 600VA with 0.6 p.f and i use it for my computer which has 450W power supply unit, a monitor of 633nW and speakers. Can any one explain this.. because the output of UPS should be 360W (<450W)

2 Answers  

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what is the differnce b/w voltage and current

8 Answers   Steel Plant,

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how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky...

0 Answers  

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what is stray capacitance?

1 Answers  

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We use ACB in LT and VCB in HT.But if we use VCB in LT and ACB in HT that what will be the effect on the system or any power range?

6 Answers   Honda,

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Can we connect more than one NGR at a time of different rating of generators. what is advantage or disadvantage.

2 Answers  

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whats the one main difference between UPS & inverter ? And electrical engineering & electronics engineering ?

16 Answers  

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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 0for 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.

0 Answers  

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How the Transformer oil testing is done & Why oil dielectric goes LOW & what is solution for that ??

3 Answers   NTPC,

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