Answer / jakeer

Effective earthing:using a pipe or plate thro" ground.
resistive earthing:bank of resistors will be used for this
earthing.

Answer / ramesh

Effective earthing (grounding, for us westerners) means the electrical system star / neutral point has a direct, solid connection to earth. Resistive earthing has a resistor between the star point to earth. The resistor is used to limit earth faults to a lower value.

Answer / rajul(govind)

effective earthing means no disturb between earthing path
resistive earthing means many resistive disturb in path
earthing

if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

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What is the distance between each insulator in 33kv transformer and how can it calculate

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in three pin pluge there three pins one is phase and second is earth third is nutral why nutral high diameter compare with phase and earth

10 Answers   Radiant,

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Construction of Diesel generator set?

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It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

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How can w select the cable size for different rating load & also waht r factors affecting the during selection of cable?

11 Answers   AB Inc, Bosch, BRB Cable, Lucas TVS, Trisome Technical Services,

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IC 741 is opampIC..moreover AND OR NOT ICs also have '74' in them.. why is that number specifically used?

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In our factory there is one no. of Series trip HT 6KV OCB. 1. Is it possible to measure CT out put current by 440V Clamp meter? The measurement is required for knowing the exact value of current in CT secondary to set up protection for transformers. 2. plase forward the single line diagram of AMF panel?

1 Answers   HAL,

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what are earthing material

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1600kva capacity Transformers how the bucholz relay,Oil temperature,winding,surge relay relays setting are to be done

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We are preparing another project which involves Waste heat recovery from a 1 MW GE Engine. The Engine in particular gives out flue gas at 487Deg C with a flow rate of 5650 kg/hour and this can be cooled to 180 Deg C. This gives a thermal output of ~ 594 KW that is available for input to VAM via heat exchanger / boiler. Additionally 581 KW will be available from engine jacket water (temperature profile 80/ 80 Deg C and a flow rate of 50m3/hr) Our estimation is that 300 TR of cooling is possible with a suitable VAM machine(s). Please advise what is the most suitable arrangement with maximum TR and min Capital expenditure. plz reply me as early as possible

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in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses?  the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

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