why generator and t/f ratings given in kva & motor rating is in KW?

In 400KV Switchyard, we have used Circuit Breaker With PIR, what is the significance of PIR & why they'r used?

Why the size of transformer decreases if we increases the frequency?

Graphics Engineering,

What is the diffrence (Technical & Construction ) between CBCT & Normal CT?

Why the cost of CT increases with the decreasing of its CT Ratio (Technical Reason)?

Vedanta,

How the size of transformer decreases if we increases the frequency?

How to decide the rating of CBCT? We have 6.6Kv switchgear & having 50/1 cbct ,i want to know how this 50/1 A came? On what basis we decide CBCT reting?

Cross,

What is the effect of solar radiation on the design of an Isolated Phase Busduct?

Exide, Punj Lloyd Ltd,

What is the diffrence 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?

What is milivolt dop test in Busducts? What is its significance & procedure to do the test?

How to calculate cable size for a particular load? i have 12 MW,11KV Motor 3 Phase, what should be cablesize? What are the points to remember for cable sizing calculations?

I have seen 1 video in which a person getting shock while standing at top of a train,i have 1 question? why the people sitting in the train doesn't get shock while that man getting shock from top of the train? How the earthing of train works?

Bhel,

How to take vector group test of a transformer? Suppose we dont know the vector group of transformer, how to check its vector group through test? I have 3 transformer DYn11 & DYno& Ynd11, how to confirm its vector group?

Why tripping not occur when the transmission breaks? Doesn't we provide earthfault protection for it?

Why tripping not occur when the transmission lines (11KV & above) breaks? Doesn't we provide earthfault protection for it?