what is difference between AC VVVF drive & Dc VVVF drive explain their working principle?13 33962
why we step up voltage for reducing the loss, even if voltage and current are proportional anr resistance remains same12 19154
How would we calculate the no of earthing pits required for motor /panel5 18804
for 500mw power production how many range of transformer set in unit please reply if three transformer use .2 4509
Why donot sleep below the tree for night time?12 19688
why the generating voltage in India is 11kV or why is it be transmitted as multiples of 1133 89727
why electric shock due to dc is dangerous than that of ac44 40561
What is the difference between online ups and offline ups?44 187205
1) Explain why we don't link the two earthing system ht and mv on a pole mounted transformer sub-station.
In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.
What is the height of DA, DAL, DB, DC & DDE tower?
at which voltage level arcing ground is occurs ??????????
How PSV sizing being done
hello friends this is krunal here.. i have applied for he officer train in hpcl electrical stream.. any one who have applied before for electrical stream please help me out.. post ur reply to my mail id: firstname.lastname@example.org.. any tips, old questions for paper or any help will do.. plz help me.. your faithfully, Krunal Darji
how many testing is necessary for 27 MVA transformer?
at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.
how does WTI work ?
what is meant by flywheel and its role in retardation test
What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.
Due to velocity saturation, MOSFET reaches saturation a.Before Pinch off b. After pinch off c. At Q point d. Before Q point e. After Q point
can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?
How Can you do Maintenance of ACB of 2000Amperes
what r the preventive maintenance of air compressor