Answer / engineered

Factors for selection of cable
1.Rated current
2.voltage drop across cable
3.derating factor based on temprature,no. of cables laid
through same path influencing each other
4. Type of laying method:- like air, ground, duct, tray,
raceway
5. type of conductor required.
6. type of insulation, like PVC, XLPE, FRLS based on site
condition

Give me check-list for electrical preventive maintenance of machine tool.

1 Answers  

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Residual voltage & residual current used in which protection?

5 Answers   Qatar Gas, Reliance, Transformers and Electricals,

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1.stranded resistance values of motors? 2.how to calculate the resistance values of single phase and 3phase motors?

2 Answers   Bell, L&T,

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What is critical disruptive voltage?

0 Answers  

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Will a bulb glow if we connect it between the phase and earth instead of earthed neutral?

3 Answers  

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22kV HT incoming should be 3 phase or 4 phase? why is it not 4 phase?

1 Answers  

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A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

8 Answers  

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induction motor. we have a three phase supply from diffrent source like R= transformer. Y = DG sets. B = ups. if motor is runing.

4 Answers   Birla,

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hi engineers,if suppose distribution is going to two diff village mistakenly they r interchange the neutral of twowhat happen?

7 Answers   Bhel, L&T,

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Please define ohm’s law for a.c (alternating current)?

0 Answers  

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can we synchronize star system generators with delta system generators?

0 Answers  

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is dc transformer is possible ?

4 Answers   Jyona Power,

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