A commercial 60-Hz, 440/110-volt, 50-kVA power transformer has 600 turns on its high-voltage side. Calculate: (a) number of turns on its low-voltage (L.V.) side. (b) a, when used as a step-down transformer and as a step-up transformer (c) volts/turn ratio of low-voltage (L.V.) side

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A 2000/400 V, 100 kVA, 60 Hz step-down single-phase transformer has a primary and secondary resistances of 0.2ohm and 0.05 ohm respectively, the corresponding leakage reactances being 0.3 ohm and 0.01 ohm respectively.1. Calculate the equivalent resistance, reactance and impedance referred to the low-voltage (secondary) side.2. Find the high (primary) voltage when the transformer is supplying full-load current at rated secondary voltage at 0.8 powerfactor lagging.3. Draw the phasor diagram showing your answer in 2.

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Draw the representation schemes for: Phase shifting transformer       2. Tap changing transformer

1. A 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to LV side of 0.01 + j0.09 Q. This transformer has a core loss of 100 W at rated voltage. When rated current is applied to the 2400-V winding, the exciting current in that winding is found to be 0.2 A. a. Find the full-load regulation of this transformer at a power factor of 0.8 lagging. b. Find the efficiency of this transformer at full load, 0.8 power factor lagging. c. If standard open-circuit and tests were performed on this transformer, what would be the measured values of these tests? 2. The following data were obtained on a 2.5 MVA, 50-Hz, 19.1-kV:3.81-kV single-phase transformer tested at 50 Hz: Voltage (V) Current (A) Power (kW) LV winding with HV terminals open-circuited: 3810 9.86 8.14 HV winding with LV terminals short-circuited: 920 141 10.3 a. Calculate the cantilever equivalent-circuit parameters as referred to the transformer high-voltage winding. b. Calculate the cantilever…

A transformer on no-load has a core-loss of 70 W, draws a current of 2.5 A (rms) and has an induced emf of 230 V (rms). Determine the no-load power factor, core-loss current and magnetizing current. Also calculate the no-load circuit parameters of the transformer. Neglect winding resistance and leakage flux.

Full calculation with any assumption needed. All sub questions please as it is all related.