I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

0 Answers   RRB,

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Why 60Hz motor taking more current on load in 50Hz power supply?

1 Answers  

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Amoung all classes of electric machines, why the transformer uses oil as one medium of cooling?

4 Answers  

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what is the chiller and working principal

0 Answers   Blue Star,

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what main difference betwenn invetter & ups & major difference

2 Answers   ABB,

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what will happen if capacitor bank is used in generation side?

2 Answers  

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is it necessarry to charge the battery of ups always??

3 Answers  

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A transformer is used to light a 24volts,70watts lamp from a 240a.c main.The current in the main cable is 0.35A. Calculate, (1) The efficiency of the transformer. (2) the current in the lamp.

1 Answers  

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1.Why use in ups in software's,reason,and pls explain. 2.what is the isolation transformer and main use it's functioning and partes.

5 Answers   TATA, Wipro,

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Difference Between Differential Relay and Restricted Earth Fault Relay of Power Transformers

1 Answers   KSEB,

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How to design pavement quality concrete by using C.R.C.P Method

0 Answers   L&T,

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what is meant by negative sequencing in power system.explain in detail

1 Answers  

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