What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.

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i am having a 3 phase 12.5HP motor,that is connected in Star/delta.Without any Trip that motor stopped suddenly why?

8 Answers  

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WHAT IS MEANT BY vfd(VARIABLE FREQUENCY DRIVE )HOW CAN WE APPLY VFD TO MOTOR ? I WANT FULL DETAIL IF ANYBODY KNOW THE WEBSITE FOR THAT PLZ SEND .THANK U

2 Answers  

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kindly arrange to send me RRB Bangalore previous question paper for JE/Electrical and JE/Signal I am going to write exam on 2010

2 Answers  

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We store the d.c supply...then why can't we store A.c supply???

4 Answers  

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In Single Phase AC Supply,If Voltage between Phase and Neutral is 230V means what will be the Voltage between Phase and Earth?

2 Answers  

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what rectifiers is and what are the types of rectifiers?

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low frequency protection why recomend?

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Why Closing coli supervision is not required for Circuit breaker.

1 Answers   JSW,

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What is a soft start?

1 Answers   Focus,

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is high voltage or high current is danger

16 Answers   L&T,

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how to increase or decrease speed in DC shunt motor by DC convertor

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