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Question: Air flows through a convergent-divergent nozzle. The stagnation temperature of supply air is 200°C and the nozzle has an exit area of 2 m2 and a throat area of 1 m2. If the air from the nozzle is discharged to an ambient pressure of 70 kPa, find the minimum supply stagnation pressure required to produce choking in the nozzle and the mass flow rate through the nozzle when it is choked. Also, find the supply stagnation pressure that exists if a normal shock wave occurs in the divergent portion of the nozzle at a section where the area is 1.5 m2.
Both frequency domain Bode method and the root locus method can be used for designing lead and lag compensators for control systems. Which method would you prefer in each of the following cases?
The garment may be assumed to have a temperature of 25°C and a characteristic length of 1 m in the vertical direction. Estimate the drying rate per unit width of the garment.
what is the pressure difference over the manometer in newtons per meter?
An isolated system consists of a closed copper vessel of mass 0.1 kg, containing 1 kg of liquid water, each initially at 5°C, immersed in 20 kg of liquid water, initially at 20°C. The system is allowed to come to equilibrium. Determine the final temp..
A vertical run of copper tubing, 5 mm in diameter and 20 cm long, carries condensation vapor at 60?C through 27?C air. What is the total heat loss?
Calculate the heat loss rate at -10 F outside temperature, 70 F inside, assuming NO internal heat generation, i.e. shutdown at night - Calculate the outside "balance temperature" when the building is fully lighted and occupied with 200 customers an..
A horizontal tube of 50-mm outer diameter, with a surface temperature of 34°C, is exposed to steam at 0.2 bar. Estimate the condensation rate and heat transfer rate per unit length of the tube.
Determine the z and y parameters for the circuit
Twelve cars were inspected after final assembly. The number of defects found ranged between 87 and 139 defect per car with an average of 116. Determine the center and upper and lower control limits for the c chart that might be used in this situat..
consider a 22 ton railrod flatcar on which are located two automobiles facing one another and located at each end of
What is the average heat flux based on inside area of the tubes? What is the average temperature gradient in the water on the inside surface of a tube
Estimate the minimum torque and power required to drive the mixer. Explain your answer in clear detail and show your work.
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