Transformers

JEE Main Physics · Alternating Current · 5 questions, latest first

• A transformer has an efficiency of 80\% and works at 10 V and 4 kW. If the secondary voltage is 240 V, then the current in the…20241 February, Shift 2 · Q43
• A power transmission line feeds input power at 2.3 kV to a step down transformer with its primary winding having 3000 turns. The…202430 January, Shift 2 · Q58
• Primary coil of a transformer is connected to 220 V ac. Primary and secondary turns of the transforms are 100 and 10…202430 January, Shift 1 · Q50
• Primary side of a transformer is connected to 230 V, 50 Hz supply. Turns ratio of primary to secondary winding is 10: 1. Load…202427 January, Shift 2 · Q43
• An ideal transformer with purely resistive load operates at 12 kV on the primary side. It supplies electrical energy to a number…20236 April, Shift 1 · Q54