How to specific gravity of battery will check, i didnt saw any hydrometer. & say me how to dip into the battery what are the specifications are given in the hydrometer?

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how we calculate full load current of A.C & D.C Motors?

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Dear All, In a 400V power system, ratio of three current transformers installed incoming switchgear is 4000/1. Maximum three phases short circuit current of this system is 48kA. One CT is installed on neutral of upstream transformer (6/0.42kV, solidly earthed) for 51G protection. Would you please inform me about the correct CT ratio of this current transformer (on neutral)?? Thanks a million

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what does the regenerative braking mean?and how it used for Dc motor? thanks.

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what is Electrical BMS

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

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Hi everyone, I'm Lachuu, recently joined automation company as PLC Engineer. I have certain basic question, I request all big gurus and seniors to answer these question. Because this will be very helpful to me as well starters like me. How to design a control circuit (ex: pick & place - my current project) Yamaha robot PxYx series controller RCX222, using 6 cylinder double acting, plc keyence kv p16r 2 expansion unit for input and output each. How to select panel terminal mcb elcb powersupply. My main concern in some projects how to select dc power supply, mcb rcb(I came across dif bt b c d curves, but stil confusing, pls help me :-(. I would really appreciate all who are going respond to this question.

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What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

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We have AC-transformer 110/13.8kv,40MVA.If DC-Voltage=110kv is applied in its primary what will happen?

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Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.

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what is the lemen of a single 5mm 13000mcd white led pls reply

1 Answers   Eskom, Sona,

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What type of a DC motor would you use for a lift?

0 Answers   GE,

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