Answer Posted / md.mahmudul hasan

we need to consider short ckt(KA) also. Say short ckt level
is 20KA then we need to select busbar accordingly.

What does the term “voltage regulation” means?

1088

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What is the effect of interchanging core(made of steel) and winding(made of copper) material in case of transformer? Give proper explanation in regard to different losses in transformer.

1870

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1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?

1890

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What are dcs and plc?

1097

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what is the ms flat constant for calculating earth mat design calculation?

2502

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What is minimum phase system?

1130

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how mass curve differs from hydrograph.

1773

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If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

2097

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What is time response of the control system?

1085

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What is Anemometer used to measure?

1116

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define reflection method?

1935

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i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

1973

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What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage

6146

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Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

1929

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why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

2825

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