what is the speed of a turbine in an hydroelectric power station and how many poles does it have...?

1 Answers  

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

6 Answers  

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I have a current transformer with 1 main reading meter with transformer outside the building and a control panel having 5 CT reading meters with black round coils inside the building. I want to know, A) when current pass through the Transformers, will the current be reduced or be the same and after that B) when current pass through the CT meters with black round coils, will the current be reduced or be the same. C) in the above process will the reading of the main meter be same or different, from the total reading of all the 5 CT meters.

0 Answers  

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For a load of 40HP induction motor.what will be size of Armoured copper cable require to connect the motor to starter in Star-Delta?

1 Answers   CG,

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what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

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heat can flow from a body at low temperature to a body at higher temperature only when ........ is supplied from an external source A). Voltage B). Current C). work D). Mass

7 Answers   BMRCL,

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What is the difference btwn grounding and earthing?

11 Answers   HAL,

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a solar energy installation utilizes a three phase bridge converter to feed energy into power system through a transformer of 400v/400v.the energy is collected in a bank of 400v battery and is connected to converter through a large filter choke of resistance 10ohms.1.the maximum current through the battrey will be.2.the kva rating of the input transformer is.

1 Answers   GATE,

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How to Calculate 11 KV Side Cable size of a 250 KVA Oil cooled transformer

2 Answers  

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what is the difference between OSR and BUCHHOLZ relay of transformer?

1 Answers   Bhushan Power Steel,

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what is the differebt between ac and dc fuse?

0 Answers   IBM,

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what happen when dc supply is given to the transformer

9 Answers   Bhel,

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