A gasoline engine uses 2 moles of monoatomic ideal gas as the working substance. Figure 3...
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A gasoline engine uses 2 moles of monoatomic ideal gas as the working substance. Figure 3 shows the thermodynamic cycle taken by the engine. Process a → b is adiabatic, b →c is isochoric, e → d is isobaric and d → a is isochoric. Given Pa = 1.5 x 10° Pa, Va = 6.17 x 10-3 m³, V, = 2.5 Va and T = 208 K. Pressure V, V. Volume Figure 3. Given P, V" = P,V" and T,V = T,V for adiabatic process Calculate the (a) pressure at state b [ 3 marks] (b) pressure at state c | 3 marks| (c) the net work done by the engine each cycle | 6 marks| (d) the entropy change of the working substance in the isochoric process [ 3 marks] d - a. A gasoline engine uses 2 moles of monoatomic ideal gas as the working substance. Figure 3 shows the thermodynamic cycle taken by the engine. Process a → b is adiabatic, b →c is isochoric, e → d is isobaric and d → a is isochoric. Given Pa = 1.5 x 10° Pa, Va = 6.17 x 10-3 m³, V, = 2.5 Va and T = 208 K. Pressure V, V. Volume Figure 3. Given P, V" = P,V" and T,V = T,V for adiabatic process Calculate the (a) pressure at state b [ 3 marks] (b) pressure at state c | 3 marks| (c) the net work done by the engine each cycle | 6 marks| (d) the entropy change of the working substance in the isochoric process [ 3 marks] d - a.
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Related Book For
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
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