Answer / arshad m, calicut,kerela

Contactor is used for controlling the Device.It contain one
energising coil and auxiliary contacts ie NO or NC.Whenever
the coil gets energise its auxiliarry contacts position
changes ie NO become NC and NC become NO.

Answer / ashirbad behera

its an electrical device used for supplying controlled
power supply to electrical equipment along with some other
auxilary contact i.e. NO/NC.or simply u can say its a
distant switching device.it has one magnetic coil,when ever
we give control supply to its coil its get energised &
pulls up main contact for supply leads to make electrical
ckt.again we remove control supply to its coil its de-
energise to release contact.

Answer / tanmay kumar

Contactor is an electrically controlled switch used to make power circuits.

If the capacitor feeder is switched ON without any load, is there any display in the ammeter at the incomer?

3 Answers   RTD, Welspun,

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When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

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In Extended Delta transformer, by which method we can measure the extended angle of transformer?

1 Answers   Usha Martin,

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A distribution transformer giving afrequency of 200HZ, where it is rated for 50HZ. when it will occure?

2 Answers  

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This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

0 Answers  

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In Railway,why we are used HT Line 25KV ?.why we are not used 11KV,33KV and others for This?

37 Answers   Airtel, BSNL, RRB,

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if there is fire alarm,what is ur activity?

4 Answers  

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Upto what extent, the lagging power factor can be improved with the help of capacitors?

6 Answers  

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PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

0 Answers  

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what is the main different between distribution transformer and power transformer ?

7 Answers   Sail,

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Why the colour of insulator is always is chocolate in colour?

3 Answers   Bhel,

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how the aircraft outer body and inner body is separated ?

0 Answers  

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