A frictionless piston-cylinder device contains 3L of saturated liquid water at a pressure of 200 kPa. Water is stirred by a paddle wheel for 22 minutes while a current of 7.5 A flows through a resistor placed in the water. If the 74% of the water remains at the liquid phase and the rest water is evaporated during this constant pressure process. If the voltage of the electricity source is 160 volts, determine (a) the final temperature and (b) the amount of work added to the water by the paddle wheel. Also, show the process on a P-v diagram with respect to saturation lines.

A frictionless piston-cylinder device contains 3L of saturated liquid water at a pressure of 200 kPa. Water is stirred by a paddle wheel for 22 minutes while a current of 7.5 A flows through a resistor placed in the water. If the 74% of the water remains at the liquid phase and the rest water is evaporated during this constant pressure process. If the voltage of the electricity source is 160 volts, determine (a) the final temperature and (b) the amount of work added to the water by the paddle wheel. Also, show the process on a P-v diagram with respect to saturation lines.

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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