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A 440/110 V, single phase transformer draws a no-load current of 5 A at 0.2 p.f. lagging. If a current of 120 A at 0.8 p.f lagging is supplied by the secondary, calculate the primary current and p.f. A single phase transformer with a ratio of 6600/400 V (primary to secondary voltage) takes to no-load current of 0-7 A at 0-24 power factor lagging. If a current of 120 A at a power factor of 0-8 lagging is supplied by its secondary. Estimate the current drawn by the primary winding. The primary winding of a single-phase transformer having 350 turns is connected to 2.2 KV, 50 Hz supply. If its secondary winding consists of 38 turns, determine (i) the secondary voltage on no-load. (ii) The primary current when secondary current is 200 A at 0-8 p.f. lagging, if the no-load current is 5 A at 0-2 p.f. lagging. (ii) the p.f. of the primary current A single phase transformer takes a no-load current of 4A at a p.f. of 0.24 lagging. The ratio of turns in the primary to secondary is 4. Find the current taken by the transformer primary when the secondary supplies a load current of 240 A at a power factor 0.9 lagging. A 2000/200 volt transformer has a primary resistance 2.3 ohm and reactance 4.2 ohm, the secondary resistance 0.025 ohm and reactance 0-04 ohm. Determine total resistance and reactance referred to primary side.