The pressure inside the cooker is regulated by a weight (jiggle top or valve) placed on a vent hole. The pressure exerted by this weight on the area of the hole determines the additional pressure above atmospheric pressure needed for the steam to escape. Thus, the maximum pressure (and hence the maximum temperature) inside depends directly on the weight used and the area of the vent hole.
Maximum temperature inside pressure cooker depends on :
Asked in UPPCS Prelims 1995 · Topic: Heat and Thermodynamics (Phase Transitions and Clausius-Clapeyron Equation)
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Answer: A. Area of hole on the top and weight kept on it
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