Answer Posted / arun

answer 2 is partially correct but i would like to add one more point i.e armour is not only used for mechanical strength and it is also used for earthing i.e if any leakage occurs than that leakage currect will be earthed through this armour

What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1746

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difrent between vcb acb sf6 and mccb breakers

5443

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i have been tasked with a design of protection, metering and control(PMC) relay panel extension to accommodate all PMC relays.There is an already existing panel where this one will be built.What are the design aspects for this kind of project? thank you.

2124

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explain the mode of metal iranafer in Co,welding

1591

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Can double compression glands be used with regular cables?

2116

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List out the the types of Mounting Light fixture?

1615

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

1971

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WHY RATING OF VCB NOT LESS THAN 630A

2624

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why we r not earthed Control cable of C.T. terminals

2040

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How would you calculate power loss in a resistor?

1079

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On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?

2659

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Define ampere

1316

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What is evaporator & condencer & compressor

2172

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how to define tell me about self

2005

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Why is a plain induction motor unsuitable for wide speed control?

2279

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