before transformer oil dielectric strenght tests are taken the oil should be allowed to settle to remove option 1 air bubbles 2 gasses 3 contamination 4 water

1660

generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

1922

What is mean by hot and cold loop testing? What is the difference between them?

1125

how do you test tachos and servos

2120

State the frequency for rc phase shift oscillator?

1124

excitation limit of an excitor

2057

What will be electrical cost per sqft for IT building (basebuild and fitout)and for residential township?

1933

why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

1796

What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

2348

Why we cant store an ac power. If we coo store in which device we can?

2176

What is meant by time harmonics and space harmonics?

2805

Dear All we are having a problem in G120 BOP showing alarm A0503, F0052, F0060 we can not remove fault alarm ,Please any body help us. kowsar

1825

can the measured percentage error during calibration of single phase energy meter be negative?

2410

star delta starter contorl circuit... drawing..

2088

We have Diesel generator of 200KW. fuel consumption is always same,even connected light load or full load. Is it right?

2164