Engineering, 25.07.2020 19:01 achasengnou792
1) Mathematically write 2nd Law (for all type of systems) using 3 symbols2) Entropy, s , is an intensive thermodynamic property T or F 3) Eliminate Sgen to minimize Wout of power cycle and maximize Win of heat pump T or F 4) For a specified inlet state, exit pressure, and mass flow rate, the power input to a compressor operating at steady state is less than what would be required if the compression occurred isentropically. T or F 5) For a specified inlet state, exit pressure, and mass flow rate, the power developed by a turbine operating at steady state is more than if the expansion occurred isentropically. T or F 6) The Carnot cycle analyzed in problem 6.169 produces entropy, Sgen > 0 T or F 7) The boiler and condenser in problem 6.169 produces entropy, Sgen > 0 T or F 8) The mixing of two streams of water at different temperature in a mixing tee (i. e. kitchen faucet) is an irreversible process, and produces entropy, Sgen > 0 T or F 9) Entropy generation, Sgen , is an intensive thermodynamic property T or F
Answers: 1
Engineering, 04.07.2019 18:10
Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when
Answers: 1
Engineering, 04.07.2019 18:20
Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k
Answers: 2
Engineering, 04.07.2019 18:20
For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.
Answers: 1
Engineering, 04.07.2019 19:10
With increases in magnification, which of the following occur? a. the field of view decreases. b. the ambient illumination decreases. c. the larger parts can be measured. d. the eyepiece must be raised.
Answers: 1
1) Mathematically write 2nd Law (for all type of systems) using 3 symbols2) Entropy, s , is an inten...
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