Transformer » Exercise - 13. In an ideal transformer : (a) windings have no resistance (b) core has no losses (c) core has infinite permeability (d) all of the above
Transformer » Exercise - 114. At relatively light loads, transformer efficiency is low because : (a) secondary output is low (b) transformer losses are high (c) fixed loss is high in proportion to the output (d) Cu loss is small
Transformer » Exercise - 115. The ordinary efficiency of a given transformer is maximum when : (a) it runs at half full-load (b) it runs at full-load (c) its Cu loss equals iron loss (d) it runs slightly overload
Transformer » Exercise - 111. No-load test on a transformer is carried out to determine : (a) copper loss (b) magnetising current (c) magnetising current and no-load loss (d) efficiency of the transformer
Transformer » Exercise - 13. In an ideal transformer : (a) windings have no resistance (b) core has no losses (c) core has infinite permeability (d) all of the above