![Engineering](/tpl/images/cats/User.png)
Engineering, 20.12.2019 03:31, AmbitiousAndProud
Air is heated as it flows subsonically through a duct. when the amount of heat transfer reaches 67 kj/kg, the flow is observed to be choked and the velocity and the static pressure are measured to be 680 m/s and 261 kpa. disregarding frictional losses, determine the velocity, static temperature, and static pressure at the duct inlet. take the properties of air to be k = 1.4, cp = 1.005 kj/kg·k, and r = 0.287 kj/kg·k.
![answer](/tpl/images/cats/otvet.png)
Answers: 2
Other questions on the subject: Engineering
![image](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10, koolgurl2003
Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.
Answers: 1
![image](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20, kendrawalraven
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
Answers: 3
![image](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:20, xcapo1x
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
![image](/tpl/images/cats/User.png)
Engineering, 04.07.2019 19:10, Mimidj9279
The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false
Answers: 2
Do you know the correct answer?
Air is heated as it flows subsonically through a duct. when the amount of heat transfer reaches 67 k...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 30.11.2020 05:20
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 30.11.2020 05:30
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 30.11.2020 05:30
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 30.11.2020 05:30
![Konu](/tpl/images/cats/ekonomika.png)
Business, 30.11.2020 05:30