Expain why cooking is faster in a pressure cooker.

Define pressure .

Why does food cook faster in a pressure cooker ?

To demonstrate the process of thermoelectric production with a model. Apparatus and materials: Pressure cooker, pipe, tennis ball, metal sheet, dynamo, bulb. Procedure : rarr Take a table-tennis ball and make three slits into it. rarr Put semicircular fins cut out of a metal sheet into these slits. rarr Pivot the tennis ball on an axle through its centre with a straight metal wire fixed to a rigid support. Ensure that the tennis ball rotates freely about the axle. rarr Now connect a cycle dynamo to this. rarr Connect a bulb in series. rarr Direct a jet of water or steam produced in a pressure cooker at the fins. Note down your observation. Observation : The bulb gets lighted. What do the simplest turbines have ?

To demonstrate the process of thermoelectric production with a model. Apparatus and materials: Pressure cooker, pipe, tennis ball, metal sheet, dynamo, bulb. Procedure : rarr Take a table-tennis ball and make three slits into it. rarr Put semicircular fins cut out of a metal sheet into these slits. rarr Pivot the tennis ball on an axle through its centre with a straight metal wire fixed to a rigid support. Ensure that the tennis ball rotates freely about the axle. rarr Now connect a cycle dynamo to this. rarr Connect a bulb in series. rarr Direct a jet of water or steam produced in a pressure cooker at the fins. Note down your observation. Observation : The bulb gets lighted. Which structure in the model acts as a turbine ?

To demonstrate the process of thermoelectric production with a model. Apparatus and materials: Pressure cooker, pipe, tennis ball, metal sheet, dynamo, bulb. Procedure : rarr Take a table-tennis ball and make three slits into it. rarr Put semicircular fins cut out of a metal sheet into these slits. rarr Pivot the tennis ball on an axle through its centre with a straight metal wire fixed to a rigid support. Ensure that the tennis ball rotates freely about the axle. rarr Now connect a cycle dynamo to this. rarr Connect a bulb in series. rarr Direct a jet of water or steam produced in a pressure cooker at the fins. Note down your observation. Observation : The bulb gets lighted. How electricity generated in this simple model ?

To demonstrate the process of thermoelectric production with a model. Apparatus and materials: Pressure cooker, pipe, tennis ball, metal sheet, dynamo, bulb. Procedure : rarr Take a table-tennis ball and make three slits into it. rarr Put semicircular fins cut out of a metal sheet into these slits. rarr Pivot the tennis ball on an axle through its centre with a straight metal wire fixed to a rigid support. Ensure that the tennis ball rotates freely about the axle. rarr Now connect a cycle dynamo to this. rarr Connect a bulb in series. rarr Direct a jet of water or steam produced in a pressure cooker at the fins. Note down your observation. Observation : The bulb gets lighted. Which energy conversion do you think is taking place in this model ?