Answer Posted / rajpalsing rajput

It is the ratio of IR value at 10 min to the IR value at 1
min.It is measure of condition of insulation system wether
it is clean or dirty.If it is greater than 2 indicat the
good condition of insulation system and if it is greatore
than 6 indicate that insulation system is thermally degrade.

3ph motor running with unequal kw and different pf what are the reasons

1887

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Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.

2320

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1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

8234

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What is meant by turbo alternators?

1222

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how to calculate the formula of cable size if motor kw is given

2287

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why using transformer and thyristor switch in 3 phase apfc panel

2889

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How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

2340

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what's the requirement of Dy11d0 connection of 3 phase transformer?what's use of it?

7996

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What is phase cross over frequency?

1143

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Why syn. Generators are used for the production of electricity?

1175

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What are marginally stable systems?

1113

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how is capacitor bank look like

2417

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when qty of cable being purchased is not sufficient according to the standard,what should the inspector do to ensure its quality according to the standard?

2087

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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

1947

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can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.

2157

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