Transformer » Exercise - 112. The main purpose of performing open-circuit test on a transformer is to measure its : (a) Cu loss (b) core loss (c) total loss (d) insulation resistance
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 - 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
Transformer » Exercise - 112. The main purpose of performing open-circuit test on a transformer is to measure its : (a) Cu loss (b) core loss (c) total loss (d) insulation resistance