Engineering, 15.11.2019 18:31 elizabethhubbe
Refrigerant 134a enters a water-jacketed compressor operating at steady state at −10°c, 1.4 bar, with a mass flow rate of 4.2 kg/s, and exits at 50°c, 12 bar. the compressor power required is 150 kw. neglecting kinetic and potential energy effects, determine the rate of heat transfer to the cooling water circulating through the water jacket.
Answers: 2
Engineering, 04.07.2019 18:10
Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
Answers: 2
Engineering, 04.07.2019 18:20
Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.
Answers: 3
Engineering, 04.07.2019 19:10
The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object
Answers: 1
Engineering, 04.07.2019 19:10
The maximum shear stress and maximum flexural stress occur at the same location along a beam subjected to a non-uniform bending load. a)-trune b)- false
Answers: 2
Refrigerant 134a enters a water-jacketed compressor operating at steady state at −10°c, 1.4 bar, wit...
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