Which type of material used for fuse wire & solder wire.

13 Answers  

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Pls explan the OLR setting in VCB at HT yard

0 Answers   Juniper Networks,

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When we change the tap position of 10MVA transformer it suddenly tripped with Out of step indication and also with Static differential relay indication, Transformer Bucholz relay indn and Low oil level indication. Before 1 week the same problem occured by changing the tap position. but at that time only oltc bucholz relay activated. After testing the TxR Relay team & PET team cant find any solid reason. The values are ok also. So plz answer wat's the reason for this incident? anybody plz help.

3 Answers  

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what is the use of providing earthing for tanks? i know for lightning we use earthing ? Here one of my ONGC project there is no need of lightning protection and there is no power connection near by tank in that situation also ONGC asking earthing for tanks but we didn't understanding why they asking earthing? is anybody tell exact answer?

4 Answers  

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when we decide to use soft starter drive or vfd drive in mcc to operate apump?

0 Answers  

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Radio Carbon dating is used in a) find diseases b) find the age of relics c) find the carbon content in the atmosphere d) none of these

2 Answers  

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1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

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what is the dedicated earthing

1 Answers   Reddy Labs,

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.if the vector group of two transformers is not same n tey r connected in parallel operation then what will happen?

2 Answers   ABB,

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please send me previose rrb junior engineer qustion papers

0 Answers   RRB,

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how to calculate the megger values for motor, cables and transformers?

2 Answers   ITC Infotech,

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tell me the various standerd of CT ratio

1 Answers   ICA,

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