Why current flows in nutral? As per theory there should be
no current in 3 ph explain.
Answer Posted / rvg
if the three phase load is unbalanced, there will be a
voltage between the common point (star system) and earthed
ground( system ground), known as Neutral shift voltage. So
if you are short circuiting these, there will be a current.
Ir+Iy+Ib=Io not Zero for unbalanced loads.
| Is This Answer Correct ? | 17 Yes | 0 No |
Post New Answer View All Answers
What is the types of HT motor testing
what are the different methods for the starting of a synchronous motor.
why lightning arrestor are made in two stack of insulator but why not cvt
How many double suspension hardware fittings are required on a double circuit transmission tower?
grr resistance & contrator malt continuous
Why are the cores of large transformers built up of circular transactions ?
What mean by MLTP
can u give me a brief idea about power line carrier communication ??
What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.
How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....
How energy is generated in hydroelectric power plant?
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....
what will be happen if earth point is being used for as a neutral point for raw power , and same will be used for ups earthing
why the rotor current becomes in steady state during high slip region? please verify with equations.