At light load transformer efficiency is less because
A secondary output is low B transformer losses
are high
C fixed loss is high compared to output
D
copper loss is small
why nutral and earthing wire connect with each other in main panel board.?
What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.
whatare the disadvantages occur,if the form factor of transmission will not be equal to 1.11
I have a transformer whose primary operates at 230V, 50Hz for which the secondary voltage will be 12V, 50Hz. What will be the secondary voltage if the primary is fed with 400V, 8KHZ Signal?
what is a kit kat fuse?
what is practical efficiency of power transformer..?
what is Basic Engineering.,FEED and Detail Engineering with respect to Electrical Engineering.(Explain with Example)
while doing high voltage test on 11kv/433 distribution transformer why we only give 28 kv on hv side and 3kv on lv side for power transformers what is the value what factors it depends
How i can decide that HVDC line is best for transmission.
What happened If 3phase supply connected to slip ring side of slipring induction motor ?
Is it necessary to seperate the DG earth grid with Electricity Board earth grid for protecting the DG set. if yes why?
what happens when you connect a.c and d.c supplies