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

I am applying for NTPC examination.Can we please provide previous paper to my mail prasad.chintala108340@gmail.com

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If the generator will trip, what you will do as an electrical technician in charge.

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work of choke in florocent tube circuit ?

0 Answers   Bhel,

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What is a soft start?

1 Answers   Focus,

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What is the role of the 50 STUB protection at a GIS 400KV substation with SIEMENS protection relays?

0 Answers   Power Plant,

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What is Partial Discharge test .Please specify that this test can be test on 11/0.433 KV,630 KVA Transformer.

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How amny AH battery required for 600va inverter ?And how many hours it will give backup for ceiling fan ?

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why we did not mention ryb like byr in 3 phase

2 Answers   Ford,

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what is derated current of power cable & what is formule to find derated current?

1 Answers   Thermon,

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what is the generating transformer?

3 Answers  

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In both 600/1000 V cable and 450/750 V cable, we can supply 415 V. However for distribution, all utilities are using only 600/100 V instead of 450/750 V. What is the reason?

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why we are 0.8 power factor only?

1 Answers   Suman Industries,

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