Single Phase Transformer
Notes
See all →Top questions
See all →- What is the transformation ratio of a transformer and how does it relate voltage, current and turns? In one line The transformation ratio K = N₂/N₁ = E₂/E₁ = I₁/I₂ tells how the transformer changes voltage and current: voltage scales with tu... 1
- What is an ideal transformer, and what assumptions make a transformer ideal? In one line An ideal transformer is an imaginary transformer with no losses, no leakage flux and zero magnetising current, so output power e... 1
- How does a practical transformer differ from an ideal one, and what is its no-load current? In one line A practical transformer has winding resistance, leakage flux, core losses and finite permeability, so even at no load it draws a... 1
- What happens inside a transformer when a load is connected to its secondary winding? In one line When load current flows in the secondary, its MMF tries to reduce the core flux, so the primary automatically draws an extra cur... 1
- What are iron losses and copper losses in a transformer and how are they reduced? In one line A transformer loses power as iron (core) loss, made of hysteresis and eddy-current losses that stay almost constant, and copper... 1
- How is transformer efficiency defined and at what condition is it maximum? In one line Transformer efficiency is output power divided by input power, and it is maximum at the load where variable copper loss equals c... 1