Answer / k.prakashchandra

Set OCR at 110 % of rated current, ground fault at 10-20 %
of OCR,inst trip at 2 to 6 times the OCR and SC(inst) at 8
times the OCR.

How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?

0 Answers  

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electricity board have asked me what size meter i need fitted in my garage, its a 415volt supply and i want to run six 20amp supplies tolifts and things plus ten florry lights , what kva meter do i need??

2 Answers   HCL,

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how to test the ht machines?

0 Answers   ONGC,

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HOW TO IDENTIFY THE RELAYS WHICH APPLICATION IN WHICH RELAY USING

3 Answers  

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what will happen if one of the phases from a 3-phase motor is disconnected?? stop/run at 2/3rd speed or run at same speed????

3 Answers  

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explain why the secondary terminal of current transformer should not be lift open circuited.

2 Answers  

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What is Fire Panel ? How it works ?

0 Answers  

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I have installed capacitor bank at secondary transformer. cos phi is increase. but on load (far from transormer), it still poor. Can anybody explain it??

6 Answers  

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what is real , reactive and apparani power

1 Answers  

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how to calculate the MF in meter reading

2 Answers  

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I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

0 Answers  

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A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

0 Answers   VECL,

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