Answer Posted / kishor a. thakkar

because its load is variable. and motor load is
continuously so we measure in KW. and Trans. measure in Kva.

what are the installation procedure of high voltage power transformer,CT,CB&PT?

2123

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Pls Breifly explain about UPS (Inverter,Reserve,Rectifier,Float voltage,Boost voltage).

2826

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What are the factors influence the choice of an electrc drive?

2119

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How is the connection of the tap changer on the HV side been made?

2037

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Dyn1 transformer vector group testing how to do

1852

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how can we design robots

2002

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1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

1935

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How isolater function when installed inelectrical 440V wiring

2291

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TRANSFORMERS WITH DC SUPPLY

2124

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IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.

1882

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hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

2160

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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1931

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What is mean by Sensitive Earth fault & what are the effects

4608

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Is it possible to connect a safety device in to parallel?

2190

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what is the voltage between earth & neutral in 3 phase electrical connection.

2007

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