what are the different pre- commissioning tests performed on distribution transformer, power cable and switchgear?????

1 Answers   Reliance,

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In 1000KVA Transformer why does we connect HT with delta connection and LT with star connection.Illustrate by showing formula?

4 Answers   Tata Motors,

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how many synchronous motor are there in any power plant

0 Answers   L&T,

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What is difference between earth leakage relay and restricted earth fault relay ?

22 Answers  

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typically in power distribution substation. 1- Any idea how would be the graph of capacitor bank consumption verses time through the day . 2- How is the switching ( on and off ) of the capacitor bank, per need?

0 Answers   Siemens,

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1)what is hypo test. 2) which cable need to hypo test.3) when hypo test can be done before or after glanding.4) what is the purpose of hypo test.

5 Answers  

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1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly dc supply is given to field winding of syn. motor and armature winding of dc motor, they are safe. (Remember both windings inductive nature) what is the reason behind that?

2 Answers  

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What does negative slip of an induction motor signify?

10 Answers   Tata Elxsi,

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what is the k var ratting of 1250kva

0 Answers  

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Why we does earthing for transformer neutral point

5 Answers   amps, DLF,

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how can i change the rotation of the AC single phase induction motor and show me by diagram

0 Answers  

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1.what is bus cuplour and main funtions. 2.what is main function of alternator. 3.how many types of dg oils.

11 Answers   Bhel,

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