Question

05/03/2019 Bonus problems (5 pts) 1. (True or False) Like any other extensive property,entropy production can be positive, negative, or zero. 2. Which of the following is not an extensive property? c) Density b) Entropy a) Volume e) None of these d) Mass 3. Using the entropy rate balance equation for the closed system n inventor claims that the device receives a heat transfer of energy at a rate of 200 kJ's at a temperature of 600 K, receiving a second heat transfer at a rate of 600 kJ/s at 900 K, and discharging energy by heat transfer at a rate of 400 kJ/s at a temperature of 800 K. Evaluate this claim. Complete the following two equations to represent heat transfer using entropy changes Tds-dh-( 5. Which of the following equations are wrong? (a)h=u+pv (d) du c,d (e) None of these Page

Answer 1

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