Answer Posted / veera

in 5p20 5 is 5% of the 20times of the primary current(i.e)
in case 100/1A CT 20*100=2000A 5% is 100A ERROR AT 2000A
fault cuurent for instantaneous trip this error is
negligible

how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .

2282

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what is PWM in IGBT and how it works for drive.?

1663

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Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above

2219

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How you calculating the 30 Hp 3 phase AC motor of power what size of cable is used for this motor?

1666

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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

1858

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Why are cables rated for 40 KA for 0.25 Sec fault current rating?

1957

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r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā

1718

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

2382

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what about SAP/MRP regarding manufacturing of electric motors and all drives?

2020

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What do you mean by a current transformer?

1093

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we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

1990

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Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?

1263

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how can see the ac indoor or out door ac which Tr

2015

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The simple way of finding the leakage quantity and % in compressed air distribution system

1674

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How much current will a 5 HP delta connected motor at no load will take?Is tat need a starter

7765

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