During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP
1396at high temperature conductivity increases for conductor what will happen for long transmission when temperature is high?
1 3553I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems
5 8751when we r using single phase load and we have power cable of 3.5core with .5 of neutral and neutral is suppose to the returen path of the phase how much current will flow in the neutral.reply.
2 3932why do we measure VIBRATION in -24vdc and why we adjust gap voltage -9vdc to 10-vdc? i am trying to get this information since 5 years, yet i haven't get reliable answer, i hope i can get from you.
1403What should be the voltage between Neutral and Ground in secondary side of the step down transformer (230 V to 110 V) with no load condition?
1602Can you use step up generator transformer of voltage ratio 16.5kv/420kv in place of step up generator transformer 15.75kv / 420 kv
1 3048What is power factor ?What are the benefits of improved power factor & how. Please explain with examples.?
ABB,
5 11376Post New Electrical Engineering Questions
why is control bus bi-directional?
Power factor =1.000 at factory in supply. However, PF = 0.8 at motor end. Current = 100 Amp, Voltage = 400 V. What is the power distribution loss? Can I reduce it by adding capacitor at the load feeder?
IN 1000kva transformer where the oil and winding temperature sensors is connected
what is the star delta connetion and how can do it a three phase motor with control witing with picture
for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv
from generating station If 400v LT line length is 1000m how much voltage is drop and how do i calculate it? which cable will be use for this line?
what sort of general awareness questions are asked in o.n.g.c entrance exam?????????????????
Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?
How to resolve if Diesel generator stop while running ?
Compare jfet’s and mosfet’s.
i need previous entrence exam papers of nhpc.
write a program that prints prime numbers from 1-20 in digonal form
Explain what cmos is and its benefits?
What does the letter CTNM in negative phase sequence relay means?
What are the advantages of nichols chart?
