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technical question -powersystem and switchgearand protection

Why do we use copper cable for HT Supply and why not Aluminium?

0 Answers  

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how power factor improves by connecting syncronous motor

2 Answers   ACC,

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why ss stablity limit is more transient stablity limit?

0 Answers   IOCL,

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what is difference between inductive and reactiveload?

5 Answers   ONGC,

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what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.

0 Answers   Bajaj,

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why only dc is given as excitation...why not ac???

2 Answers   TCS,

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what is resistance?

5 Answers  

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What does impedance in the windings of transformer signify.

2 Answers   Johnson Controls,

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Single line diagram for dbb (double bus bar)system.

0 Answers   KSEB, L&T, Siemens,

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assume we are put both df/dt and vector surge relay in same bus the df/dt relay setting is +5 hz an -5HZ. we want operat the vector surge relay before the df/dt how i calculate the setting of the vector surge relay.

1 Answers  

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1.Z transform always lies around ? a) origin b) pole c) zero d) z=1. Multiples Mcqs which is bother me can’t find answers on internet. Some help required with little explanation . Note: this is not homework or related to any test. Thanks

0 Answers   CCP,

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why inductance is not present in a incandescnt lamp?

2 Answers  

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