Question 16 4 pts A 1.1m diameter propeller is installed on a plane to generate thrust....
Question 10 4 pts If a 0.91 m diameter propeller is operating at an advance ratio (J) of 0.68, an efficiency of 0.75, and requires 684 kW of input mechanical power while spinning at 152 rpm. How much thrust is the propeller generating? Enter your answer in kilaNewtons to at least three significant figures.
QUESTION 5 A wind turbine is operating in a wind of 10 m/s - that has a density of 1.2 kg/m3. The diameter of the windmill is 4 m. The constant pressure_ (atmospheric) streamline passing the turbine blade tip has a diameter of 3 m upstream of the wind turbine and 4.5 downstream. Assume that the velocity distributions are uniform and the air is incompressible. Determine the thrust due to the wind on the wind turbine. (5 marks)
Question 3 Consider an axial compressor with blades installed at given angle with respect to incoming airflow The ccmpressor has diameter of 1.0 m and rotates at 3000 rpm. Air mass flow rate through compre sso is 110 kg/s. Pressure and temperature of air at the inlet of the compressor are 1 atm and 300K. Compressor blades are installed at 50° with respect to the axial plane. Conclude whether this compressor can operate at the designed speed of 3000 rpm....
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2 A paint sprayer pumps air through a constriction in a 0.025- m diameter pipe, as shown in the figure. The flow causes the pressure in the constricted area to drop and paint rises up the feed tube and enters the air stream. The speed of the air stream in the 0.025-m diameter sections is 5.00 m/s. The density of the air is 1.29 kg/m3, and the density of the paint is 1200 kg/m3. We can treat the...
Question 16 Determine the velocity of fluid in m/s at the throat (.e at smaller diameter of the pipe), if the flow is coming from left to right in a system as shown below. Specific gravity of the flowing fluid is 1.2. Density of water is 1000 kg/m3 Pi 735 kPa P2 = 550 kPa Flow Direction 31 mm 19 mm 21.5 0.225 0.598 0.006
Question 16 Determine the velocity of fluid in m/s at the throat (i.e at smaller diameter of the pipe), if the flow is coming from left to right in a system as shown below. Specific gravity of the flowing fluid is 1.2. Density of water is 1000 kg/m3 P1 = 735 kPa P2 = 550 kPa Flow Direction 31 mm 19 mm 21.5 0.225 0.598 0.006
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Question 1 Not yet answered Marked out of 4.00 Flag question If the number density of electrons in a wire is n 1.00 x 1028 m-3, at what drift velocity must they travel through a wire of diameter d 0.560 mm to deliver a current of 7.20 A? Give your answer in mm s1 to 3 significant figures...
A fluid of density 1300 kg/m3 flows out through a 3 meter diameter pipe without friction at a rate of 1500 L/s. Find the velocity of the fluid as it flows out of the 3 meter diameter pipe. Note that the 'speed' sensor does not give enough significant figures... use the sensor, to prove your calculations (and not the opposite!) Submit Answer Tries 0/99 Calculate the velocity of the fluid if the pipe constricts to a diameter of 1 meter....
Problem 7.036 A long, cylindrical, electrical heating element of diameter D = 10 mm, termal conductivity k = 240 w/m·K, density ρ = 2700 kg/m3, and specific heat cp-900 נ/kg-K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 20 m/s, respectively (a) Neglecting radiation, estimate the steady-state surface temperature when, per unit length of the heater, electrical energy is being dissipated at a rate of...
4. (25 pts) Water is flowing inside a thin wall, smooth pipe of diameter 0.05 m at a mass flowrate of 0.3 kg/s. The water enters the pipe at a mean temperature Tm,i= 80 °C and exits at Tm,o= 80 °C while the pipe surface temperature is maintained at Ts= 20 °C along its entire length. a. Is the flow turbulent or laminar? b. Calculate the average convection heat transfer coefficient inside the tube. c. Calculate the length of the...