Question

Example 6.2 A single-phase transformer has 600 primary and 80 secondary turns. The mean length of the flux path in the ferromagnetic core is 1.6 m, the value of flux in the core for a magnetic field strength of 1.2 T is 425 AT/m, and the corresponding core loss is 1.5 W/kg at 50 Hz. The density of the core is 7400 kg/m³. If the maximum value of flux density is 1.2 T when the primary is connected to a 3300-V, 50-Hz supply, calculate (a) the cross-sectional area of the core, (b) the secondary voltage on no load, (c) the primary magnetizing current, and (d) the core loss.

          Example 6.2 A single-phase transformer has 600 primary and 80 secondary turns. The mean length of the flux path in the ferromagnetic core is 1.6 m, the value of flux in the core for a magnetic field strength of 1.2 T is 425 AT/m, and the corresponding core loss is 1.5 W/kg at 50 Hz. The density of the core is 7400 kg/m³. If the maximum value of flux density is 1.2 T when the primary is connected to a 3300-V, 50-Hz supply, calculate (a) the cross-sectional area of the core, (b) the secondary voltage on no load, (c) the primary magnetizing current, and (d) the core loss.

Example 6.2 A single-phase transformer has 600 primary and 80 secondary turns. The mean length of the flux path in the ferromagnetic core is 1.6 m, the value of flux in the core for a magnetic field strength of 1.2 T is 425 AT/m, and the corresponding core loss is 1.5 W/kg at 50 Hz. The density of the core is 7400 kg/m³. If the maximum value of flux density is 1.2 T when the primary is connected to a 3300-V, 50-Hz supply, calculate (a) the cross-sectional area of the core, (b) the secondary voltage on no load, (c) the primary magnetizing current, and (d) the core loss.

Added by Alan J.

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