Engineering, 19.07.2019 21:20 SophieStar15
Avolumetric flow rate 1250 cm^3 s^-1 of water is to be pumped through a steel pipe of an inner diameter 25 mm and a total length 30m, to a tank 12 m higher than its reservoir. the entrance and exit losses may be neglected. the viscosity and density of the water are 1.30 x 103 ns m^2 and 1000 kg m, respectively. the roughness of the steel pipe is 0.045 mm. calculate the power required by the pumping system. if a pump efficiency of 60% is assumed, calculate the power of the pump motor
Answers: 3
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
Answers: 3
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Avolumetric flow rate 1250 cm^3 s^-1 of water is to be pumped through a steel pipe of an inner diame...
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