Answer / h s sandhu

Since there is oil in the transformer and with the load increasing the temp of oil increases because of more current flowing in HT/Lt windings .We measure the temp of oil with the max limit st as per Is of the transformer.( 90deg above ambient )

Answer / jithendra

 Transformer oil is a medium for Transformer winding to decrease the winding temperature when load increases simultaneously winding temperature increases, so oil is used & also it is insulated oil.

Answer / rutulsoni

in trasformer there is increase in temprature with increase load.we measured temp of transformer to measured insulation resistance of device.it shoud not excedd above 85 C in oil tank and shoud not exceed above 95 C between winding...is this right? pls give me feed back

How much current will a 5 HP delta connected motor at no load will take?Is tat need a starter

2 Answers   GRB,

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What is mean by hormonics?

5 Answers  

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What is the difference between tie bus and bus coupler?

1 Answers  

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what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

0 Answers  

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What is the difference between phase, neutral wire and earth cable. if neutral is connected to ground, y we need earthing cable? what difference in hot and cold wire? do neutral wire carry current?

1 Answers  

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Why are short circuit ratings always 16kA,25kA,36kA and 50kA.Who has fixed these?

0 Answers  

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What are merits & De-merits of State-Space Method? What is series programming, parallel programming, general programming & direct programming ? And, difference between these programmings Techniques ?

0 Answers  

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if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

0 Answers  

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WHY WE DO NOT TAKE THE POWER FACTOR MORE NEARER TO UNITY IN AC GENERATOR?

1 Answers  

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What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

0 Answers  

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In stepdown transformer 11/415 volt two nos.(R & Y)HT side fuse is blown ,what will be voltage of ry,rb,yb in secondary side

5 Answers   NTPC,

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CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?

3 Answers  

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