The emf per turn for a single phase, 2310/220 V, 50Hz transformer is approximately 13V. Calculate a) the number of primary and secondary turns and b) the net cross sectional area of the core for a maximum flux density of 1.4T

A single phase 50 Hz transformer has the three windings : a 220V primary, a 600V secondary and a center trapped 11-0-11 V tertiary. For a net core area of 75 cm² , calculate the number of turns in the three windings. The maximum value of flux density of 1.2T

A 2200/220 V, 50 Hz, single phase transformer has exciting current of 0.6Amp and a core loss of 361 Watts, When its h.v side is energized at rated voltage. Calculate the two components of the exciting current.

An ideal transformer has three windings : 100 turns on the primary winding p, 160 turns on secondary windings s and 60 turns on tertiary windings T. Winding s feeds 10A to a resistive load whereas a pure capacitance load across winding T takes 20A.  Calculate the current in the primary winding and its power factor in case transformer magnetizing current is neglected.

A 10KVA, 2500/250V, single phase transformer has resistances and leakage reactances as follows: r₁ =4.8Ω, r₂=0.048Ω, x₁=11.2Ω, x₂=0.112Ω, 1 and 2 denote high voltage and low voltage winding respectively. With the primary voltage held constant at 2500V, calculate the secondary terminal voltage when, a) the l.v. side is connected to a load impedance of (5+j3.5Ω) b) the transformer delivers its rated current at 0.8 p.f lagging on the l.v. side