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For each of the cases below determine if the heat engine satisfies the first law (energy equation) and if it violates the second law.
a. Q.H = 6 kW, Q.L = 4 kW, W. = 2 kW
b. Q.H = 6 kW, Q.L = 0 kW, W. = 6 kW
c. Q.H = 6 kW, Q.L = 2 kW, W. = 5 kW
d. Q.H = 6 kW, Q.L = 6 kW, W. = 0 kW
hydrogen at 25 bar 450degc enters an adiabatic turbine and expands to 2 bar 160degc with a mass flow rate of 0.2 kgs.
suppose an external torque t1 is applied to shaft 1 which has polar area moment of inertia j1. gear 1 is mounted on
the upside-down steel a frame shown in the figure is to be bolted to steel beams on the ceiling of a machine room using
the pin c will support a force of 24 knmagnitude.Based on this criterion, you are asked to determine the largest mass m that the frame can safely support.the diameter of pulley at d is given as 0.2 m.find maximum mass m that can be supported by fr..
Assume that the board weighs 25 kg and deflects 10 cm statically when the person stands on it. What is the static safety factor if the board material has an ultimate stress of 200 MPa in the longitudinal direction
It is predicted that nanotechnology and the use of nanosized objects will allow many processes, procedures and products that, as of now, are dif?cult for us to comprehend. Among new nanotechnology areas is that of nanoscale ?uid mechanics. Fluid b..
A Rigid, 85-L steam cooker is arranged with a pressure relief valve set to release vapor and maintain the pressure once the pressure inside the cooker reaches 200 kPa. Initially, this cooker is filled with water at 200 kPa with a quality of 8 percent..
it is proposed to improve the takeoff performance of a single-engined aircraft fitted with a 50-in-diammeter propeller
1 calculate the angular velocity acceleration of a 2kg mass rotating in a horizontal circle of 2m radius if one
a rigid tank has a volume of 0.06m3 and initially contains a two-phase liquid-vapour mixture of nbsph2o at a pressure
Suppose the unity feedback system of Fig. 5.60 has an open-loop plant given by G(s) = 1=s^2. Design a lead compensation D(s) = K (s + z)/(s+p) to be added in series with the plant so that the dominant poles of the closed-loop system are located at s ..
a fan drawing electricity at a rate of 1.5 kw is located within a rigid enclosure measuring 3m x 4m x 5m. the enclosure
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