Answer / balajee prakash saxena

CLOSE TO THE SOAK PIT, DIG OUT 2 X 5 FT. HOLE. FILL WITH ONE LAYER OF CHARCOAL AND ONE LAYER OF SALT (THICK)ALTERNATELY AND MUD COMPACT, WITH A COPPER PLATE OF 5" X 5", AT THE BASE. TAKE A 5 FT G I PIPE WITH A CONNECTING BOLT AND NUT, ATTACH COPPER WIRE TO THIS NUT AND CONNECT TO THE MAIN SWITCH.

1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

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A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?

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why core losses are affected with change in voltege in transformer?

1 Answers   HCL,

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what are the alternator cooling system? how it is represented?

1 Answers  

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what is diffrential relay used in generator plz give brief explanation

4 Answers  

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which type of material is used for making motor encloser

3 Answers  

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WHAT TYPES OF OIL(STRUCTURE) ARE USED IN POWER TRANSFORMER INSULATION?

4 Answers  

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If we want to change a contactor of faulty one what are the conditions want to fullfil

0 Answers   Qatar Shell,

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What is meant by harmonic distortion?

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what is the reason of current flow in nutral although load is balanced (three phase equal current)

3 Answers  

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Multimeter show phase to neutral volt 230 the per phase but phase to phase 415 not show 460 why.

1 Answers   Intas,

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What is the effect of leading power factor for power transformer & D.G?

7 Answers   Exide,

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