whatis the test procedure for lightning arrester which was installed one year back. i want check it whether it is working or not.

1 Answers  

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A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate rotor frequency. A 50 Hz B 0 Hz C 4 Hz D 6 Hz

3 Answers  

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how to modify DOL control panel into Delta Y connection?

0 Answers   ABB, PDCS,

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short circuit test of transformer gives what?

9 Answers   NTPC,

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how to calculate Transformer loss?

1 Answers  

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what is the meaning of bus bar, in electrical panels.

13 Answers   HLG Habtoor Leighton Group,

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Is there a chance for a motor speed to become negative..?? What is the reason for such a phenomenon.? In that case does the motor works as a generator..???

1 Answers  

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can anyone tel me what is competency of electrical supervisor??

2 Answers   ONGC,

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Why Nutral CT rating for Earth Fault Protection of Transformer neutral shall be 20% of Full load Current of Transformer

2 Answers  

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What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?

0 Answers  

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What are the disadvantages of autotransformer?

0 Answers  

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what is bushing in transfermor

7 Answers   Bokaro Steel, Visa Steel,

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