A 27 Kw, 3 phase, 400 volts resistance is oven is to employ nickel - chrome strip 0.25 mm thick for the 3 star connected having elements. If the temperature of the strip is to be 1000°C and that of the charge to be 600°C , estimate suitable width of the strip. Assume emissivity = 0.9 and Radiating Efficiency = 0.5 and resistivity of the strip of the material is 101.6 × 10^-8 ohm - m.
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