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can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?

1730

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Power Factor Correction Panel (Manual & Automatic)

2219

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what are the available sizes of pin type terminal lugs in the market today?

1831

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what is the difference between earthing and unearth

3075

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What is the resistance of the field winding of a d.c. Shunt generator kept low?

1108

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I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

1868

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I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions

2144

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What are the temperature elements?

1222

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What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

2174

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Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com

2080

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How to Prepare preventive maintenance shedule of machine tool.

2015

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what's the exact magnitude of current, flows through Neutral?

1962

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which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing

2601

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redundant connection in contactor?

2495

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What is the function of RCBO? What are the different sensitivity ratings & each application?

2807

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