A piston-cylinder device contains 1.20 kg of steam at 300°C and 1 MPa. The steam is cooled until 25% of its mass is condensed. Calculate the work done by the system. a. 192.30 kJ b. -192.30 kJ C. -134.30 kJ d. 163.30 kJ e. -163.30 kJ f. 134.30 kJ

A piston-cylinder device contains 1.20 kg of steam at 300°C and 1 MPa. The steam is cooled until 25% of its mass is condensed. Calculate the work done by the system. a. 192.30 kJ b. -192.30 kJ C. -134.30 kJ d. 163.30 kJ e. -163.30 kJ f. 134.30 kJ

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

A piston-cylinder device contains 1.20 kg of steam
at 300°C and 1 MPa. The steam is cooled until
25% of its mass is condensed. Calculate the work
done by the system.
a.
192.30 kJ
b.
-192.30 kJ
C.
-134.30 kJ
d.
163.30 kJ
e.
-163.30 kJ
f.
134.30 kJ

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