سككينلممسس 2) A rigid tank contains 2 kg of a ideal gas at 4 atm and 40 °C. Now a valve is opened, and half ofmass of the gas is allowed to escape. If the final pressure in the tank is 2.2 atm, the finaltemperature in the is:a. -100 °Cb. 20 °Cc. 44 °Cd. 71 °Ce. 172 °C3) A piston cylinder device contains 5 kg of air at 400 kPa and 30 °C. During an isotherexpansion process, 15 kJ of boundary work is done by the system, and 3 kJ paddle wheel mixe.is done on the system. The heat transfer during this process is :d. 45 kJa. 5 kJb. 12 kJc. 18 kJe. 60 kJ

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2) A rigid tank contains 2 kg of a ideal gas at 4 atm and 40 °C. Now a valve is opened, and half of mass of the temperature a. -100 °C gas is allowed to escape. If the final pressure in the tank is in the is: 2.2 atm, the final b. 20 °C c. 44 °C d. 71 °C e. 172 °C

2) A rigid tank contains 2 kg of a ideal gas at 4 atm and 40 °C. Now a valve is opened, and half of mass of the temperature a. -100 °C gas is allowed to escape. If the final pressure in the tank is in the is: 2.2 atm, the final b. 20 °C c. 44 °C d. 71 °C e. 172 °C

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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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

سككينلممسس

2) A rigid tank contains 2 kg of a ideal gas at 4 atm and 40 °C. Now a valve is opened, and half of
mass of the gas is allowed to escape. If the final pressure in the tank is 2.2 atm, the final
temperature in the is:
a. -100 °C
b. 20 °C
c. 44 °C
d. 71 °C
e. 172 °C
3) A piston cylinder device contains 5 kg of air at 400 kPa and 30 °C. During an isother
expansion process, 15 kJ of boundary work is done by the system, and 3 kJ paddle wheel mixe.
is done on the system. The heat transfer during this process is :
d. 45 kJ
a. 5 kJ
b. 12 kJ
c. 18 kJ
e. 60 kJ

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