b) As shown in Figure A2-b, an insulated rigid container holds 1.4 kg of saturated water and air. At the initial state, the temperature of the saturated water is 210°C and 75% of the volume is occupied by air and the rest by the saturated liquid. An electric heater inside the container heats the water and converts to saturated vapor after 0.333 hours. Air Water 1.4kg, 210°C Figure PLEASE TURN OVER (i) Determine the volume of the container in m³. (ii) Determine the temperature of the saturated vapor (iii) Determine the power of the resistor

b) As shown in Figure A2-b, an insulated rigid container holds 1.4 kg of saturated water and air. At the initial state, the temperature of the saturated water is 210°C and 75% of the volume is occupied by air and the rest by the saturated liquid. An electric heater inside the container heats the water and converts to saturated vapor after 0.333 hours. Air Water 1.4kg, 210°C Figure PLEASE TURN OVER (i) Determine the volume of the container in m³. (ii) Determine the temperature of the saturated vapor (iii) Determine the power of the resistor

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

b) As shown in Figure A2-b, an insulated rigid container holds 1.4 kg of saturated water
and air. At the initial state, the temperature of the saturated water is 210°C and 75%
of the volume is occupied by air and the rest by the saturated liquid. An electric
heater inside the container heats the water and converts to saturated vapor after
0.333 hours.
Air
Water
1.4kg, 210°C
Figure
PLEASE TURN OVER
(i) Determine the volume of the container in m³.
(ii) Determine the temperature of the saturated vapor
(iii) Determine the power of the resistor

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b) As shown in Figure A2-b, an insulated rigid container holds 1.4 kg of saturated water and air. At the initial state, the temperature of the saturated water is 210°C and 75% of the volume is occupied by air and the rest by the saturated liquid. An electric heater inside the container heats the water and converts to saturated vapor after 0.333 hours. Air Water 1.4 kg, 210°C Figure A2-b Determine the volume of the container in m³. Determine the temperature of the saturated vapor (i) (ii) (iii) Determine the power of the resistor
2,3) In a plunger cylinder device, 15 kg of air is heated from 25°C to 77°C by passing current through a resistance heater inside the cylinder. The initial pressure in the cylinder is 300 kPa and in the process 60 kJ of heat is lost to the environment. Determine the electrical energy supplied during the process and express it in units of kWh.
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