Answer / prashant

When we are qouting for a project its on the basis of
TENDER DWG
After that we start prepearing the SHOP DWG ie for use at
site and as per this dwg work has to be executed at site
Finally we have to prepare the AS BUILT DWG ie the exact
dwgs as to how the work was carried out at site bcoz at
site due to the site conditions the site engg mite have
laid the wire or the conduits thru a diif path as shown in
the shop dwg. All such deviations are to be shown in the AS
BUILT DWG

Answer / hamid

the shop drawing is engineering DWG and may can be
change during the construction or installation of
equipment after test .
the Hasbult drawing is the final drawing after
commissionning of installation and the last change if it
has a changement

there is a power transformer 66/11kV in delta-delta connection has 5 feeder coming out from the secondary side. One of the feeder in it normally loaded (loaded than other feeder)and this feeder usually trips with double OCR causing the bank transformer to trip. Now if the load of this feeder is put on other transformer then that no problems occurs on that transformer or the load. However normally all the test(IR, PI, short ckt, open ckt,grounding test and other ) has been conducted for this but evertything transformer..... I am not geting what is the actual problem...

2 Answers  

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It is a three inch fan and i want it to rotate to other direction .I've tried cutting the wire and reconnecting them inverse like black to white and white to black ,but it won't start rotating when i plug it in that way.And then it works again when i rejoin the wire to the way it is. I don't know what causing the problem.Is there anyone familiar with these small mortor?Any suggestion would be appreciated.Thanks!! http://i296.photobucket.com/albums/mm163/sasukebloodwheel/110527-105859.jpg

2 Answers  

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what is stiffness factor

2 Answers   NTPC, Power Plant,

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In Megger which types of test we can do ? and How it works? How to use?

3 Answers   Power Grid,

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A double circuit with dog conductor 66KV Transmission line from wind farm evacuation to feeding substation having capacity of 25MW for transmission. Can same transmission network be considered for further expansion of Power & how much in MW. If we need to expand next 10-15 MW more will there any augmentation is required in transmission network? Kindly reply asap.

0 Answers  

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transformers parts & function of each parts

25 Answers   Amara Raja, Bhutan Ferro Alloys Limited, Breather, Electrical, Electrical Tech, ERDA, GVK, Juniper Networks, Matrix, Mechanical, NFL, Oracle, Pyramid Plastics, RPPL, RRB, Siemens, TCS, Tulip Silk Mills,

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if one of the phase is failed to 3 phase IM. what will happen?

6 Answers  

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what is cogging and crawling

2 Answers  

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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.

0 Answers   VECL,

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is it possible to run the any motor when winding grounded? how?

1 Answers  

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how could we know the size of cable by physical view?

0 Answers   Havells, United Engineering,

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how is working the APFC when varying the load?

1 Answers  

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