Q1. Select the correct answer 1.1 Exergy destruction is a result of: a) Heat tra
ID: 2087768 • Letter: Q
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Q1. Select the correct answer 1.1 Exergy destruction is a result of: a) Heat transfer b) Work production c) Process irreversibilities d) Non of these 1.2 For isentropic reater than the actual work pic compression the isentropic work is always g a) Yes b) No 1.3 For reversible process the exergy destruction is a) 0 b) c) 0 1.4 Exergy is always: a) Being produced b) Being destroyed c) Not change d) None of these 1.5 An inventor claims to have created a heat engine which produces 10 kW of power fora heat input while operating between energy reservoirs at 27 °C and 427 °C. Is this claim valid? Give a confirmation to your answer c) Yes d) No 1.6 A Carnot vapor power cycle operates its boiler at 3.0 MPa and its condenser at 50 kPa. What is the thermal efficiency of this cycle? a) 20% b) 30% c) 40% d) 50%Explanation / Answer
11. Exergy means available or useful energy required for to perform work. Its gets destroyed when there is internal or external irreversabilities.
Hence, the correct option is (c).
12. No, in compression isentropic work is always less than actual work.
13. For reversbile process, there is no exergy destruction. Hence, the correct option is (b).
14. Exergy always destroys. Hence, the correct option is (b).
Please post the remaining quesion seperately.
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