Answer / prakash gokhale

3.5 core, 50 Sq. mm Al conductor, PVC / XLPE insulation

What are books to be referred for KPTCL exam?

1 Answers  

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how we can do the insulation on secondary of ct explain and so that tan delta will within limit

1 Answers  

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WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers  

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Given a ckt,the max power dissipated in the load ZL ?

1 Answers  

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why we create vaccume in transformer tank before oil filteration?

3 Answers   CG CoreEL,

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Why the generator rating in kva

32 Answers   CompuCom, DLF, Genpact, HNG, SIPM,

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What is the lower limit of break-down voltage of converter transformer.

1 Answers   Tata Steel Limited,

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Why indian power system in 11kv,22kv,33kv,66kv,110kv,220kv ? 2) Why ups required dedicated earth?

8 Answers   Energia, L&T, Sail,

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how instantanious short circuit current is calculated ? its formula.

0 Answers   Crompton Greaves,

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mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

1 Answers   IFFCO,

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If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables

1 Answers   ABC,

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why we permissive overreach in distance protection.where it is applicable to use in long r short lines

1 Answers  

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