Answer Posted / stanley electrician

Consider that 500kva transformer in your company,
and you use only 250 kva load maximum. you must calculate
the increase of your load for the future five years.
That means, expecting 275 kva load in feuture, you will get
upto 300 kvaon maximum demand.

Simply get 25% extra from the maximum load.

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

1919

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What are approaches to tackle sedimentation problem of reservoir?

1077

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Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?

2401

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what is earth-fault?when it occurs? to check where it occurs what type of test should we do?

2053

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What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

2130

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What is difference between slip rings and carbon burushes?

15240

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what should be correct gas pressures to be a 1.5 ac unite

1557

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What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

2440

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What is the problem of internal failure in ship engine telegraph system norcontrol?

2483

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What will be the voltage impact on secondary side of two transformers with different vector groups when both voltages are compared.

2057

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Fantio of tranformer

2293

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Cb closed condition if there is a tcs fail whether cb will trip or not

1896

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A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3

2065

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What is resistance reading of earth copper rod with grid and without grid?

1211

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What is the ideal position cooling fan inside the dc motor?

2148

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