Answer Posted / k.prakashchandra

Yes. If the aux tr is connected to GT and there is no generation ,the GT is back charged with grid duly isolating gen, for aux supply .

What is the function of capacitor in electrical circuits?

983

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A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

1812

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What is the lower limit of break-down voltage of converter transformer.

1855

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When will you multiply and devide with derating factors to the actual value while sizing the cable?

1880

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why the protection turbo generators is most complex?

1972

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when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....

1701

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why any centrifugal blower draw more current in starting. consider id fan and fd fan?

1800

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how to calculate micom relay earth falt time and current sertting

2405

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How to check 11000/1.732 to 110/1.732 Potentila transformer (PT)?

2148

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Convert a star connected network into a delta connected network.

1058

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What are the different types of LT Cables?

1025

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1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

4792

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What is the difference between isolators and electrical circuit breakers?

1093

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Define open loop control system.

1052

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On what basis do you decide the ONAN (Oil Natural air natural) or Dry type transformer for a project?

1546

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