why we use crushed stone in switch yard?

3 Answers  

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what are the 4 rules to start the motor?

0 Answers   JK Associates,

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A 4-Pole D.C. Generator has a speed of 1500r.p.m. Then what will be the frequency of D.C. Generator ?

9 Answers   IBM,

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What is the minimum setting in REF relay because i am facing some problem whenever power resumes after power failure my transformer is tripping because of REF trip. I am using CSPC make numerical relay(DIP switches). Now setting is 15 percentage. What is the reason for this triping. I sm waiting for answer

2 Answers  

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THE ROTIO OF VOLTAGE AND CURRENT IN A CLOSED CIRCUIT

12 Answers   APGenco, Constant, Lanco,

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If i have two 3000 kW motors and the whole facility requires a 10 MVA transformer. What would be better installing two 5 MVA transformers(one for 1 motor ) or just a single 10 MVA transformer for both of them. Give reasons for your answer.

4 Answers  

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check list of maintenance of transformer?

11 Answers   ABC, Cosmos, EPRON, Essar, Godrej, Hescom, Infosys, KPTCL, TCS,

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what happend to DC shunt motor if its field winding insulation becomes slightly weak? will that motor can run on full load or not explain in detail. thanks

0 Answers   PCL,

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Why starters are using the machines???

5 Answers   Alstom,

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why we used star delta starter for above 5hp motors

2 Answers  

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why fuse is not used in neutral...

12 Answers  

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What is the Surge suppresor? Why using in a UDB's and How it works?

0 Answers  

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