Answer / srajan

The insulation of transformer winding is tested with megger..it is tested as insulation of lv to earth , hv to earth and hv to lv..it is commonly known as IR testing..its value will be different according to weather..changes drastically in monsoon..

Why we are using LA Rating 10kA in 66 kv substation

1 Answers   L&T, NMDC,

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To determine the Healthiness of Insulation we will be performing Dielectric tests i.e Insulation Resistance test, Partial Discharge test,Switching Impulse, Lightning impulse, Tan Delta test ...etc why we required to perform this many test, why cant we do only one test. for Transformer, CT's

1 Answers  

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what do u mean by starting torque? how it should be for a good motor? what is the relation between starting torque and power factor? What is the relation between efficiency and starting torque?

2 Answers  

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In protection core of a C.T. why Knee pont voltage is greater than SLV and in metering its viceversa?

2 Answers  

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what is the affect of earth's magnetic field on the frequency used in aircraft???

0 Answers  

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what is the relative size of single and three phase?

0 Answers   Student,

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Why iron core transformers not used in high frequency applications ?

3 Answers  

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i want to apper for apgenco or aptransco or related can any one sugest me where can i get previous papers of thouse exams

0 Answers  

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any one please tell taht what type questions will be asked in BHEL interview, i am having interview on 24th Dec, please send this to mail pradeepsistam@yahoo.co.in

0 Answers   Bhel,

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what is pilot wire protection? wer is it using?

1 Answers  

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What are the causes of motor vibration?

3 Answers   Equate,

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What is the function of an Auto reclosure relay. How does it work??

4 Answers   KSEB,

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