Answer Posted / sandy

ELCB OPERATORS WHEN THERE IS LEAKAGE FROM PHASE TO EARTH &
RCCB OPERATORS WHEN THERE IS LEAKAGE BETWEEN TWO PHASES.

Iin ESP why positive is grounded ? why not negative ?

2656

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What are the main faults of DC generators?

2998

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DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?

2614

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Is there any specialised book to refer about fault level calculation both in MV and LV side??

2070

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Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)

2140

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What are the advantages of autotransformer?

1216

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what is per unit calculation?looking for simple and strong explanation thk u

2565

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Why field rheostat is kept in minimum position?

1243

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when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....

1768

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What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

2552

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I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1871

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where solid grounding and where grounding through ngr done and why?

2580

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Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?

2089

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could you measure current in parallel?

1109

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How to calculate the time setting for star connection in star delta starter? For example 10KW 3PH Induction motor.

2625

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