A 1.5-in-diameter water jet with a velocity of 100 fps impinges on a single vane moving in the same direction (thus Fx - Fu) at a velocity of 60 fps. The friction losses over the vane are such that vz - 0.90). Investigate that at what angle beta of the blade or vane maximum power is generated. V = 100 = 60 60

A 1.5-in-diameter water jet with a velocity of 100 fps impinges on a single vane moving in the same direction (thus Fx - Fu) at a velocity of 60 fps. The friction losses over the vane are such that vz - 0.90). Investigate that at what angle beta of the blade or vane maximum power is generated. V = 100 = 60 60

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

The impeller of a centrifugal blower has a radius of 15 cm and a blade width of 6.1 cm at the inlet, and a radius of 30 cm and a blade width of 3.4 cm at the outlet. The blower delivers atmospheric air at 20°C and 95 kPa. Disre- garding any losses and assuming the tangential components of air velocity at the inlet and the outlet to be equal to the impeller velocity at respective locations, determine the volu- metric flow rate of air when the rotational speed of the shaft is 800 rpm and the power consumption of the blower is 120 W. Also determine the normal components of velocity at the inlet and outlet of the impeller.
A tank with openings 1, 2, and 3 is moving to left at a speed of 25 km/h. Knowing that D1 = D2 = 20 cm and D3 = 10 cm, find the volume flow rate at each opening. Assume a frictionless incompressible flow. Air velocity far from the tank is assumed to be zero
A horizontal pipe bend with a deflection angle of 120o has an entrance diameter of 300 mm and exit diameter of 100 mm. Oil with a density of 860 Kg/m3 enters at the rate of 3.6 m/s and at a pressure of 180 KPa. Determine the magnitude of the force required to hold the bend in place for (a) smooth flow; (b) a situation where head loss is 0.05(v100-v300) 2/2g.
A pipe of diameter 40 cm carries a liquid of spec. gravity = 0.94 at a velocity of 24 m/s. The pressuresat points A and B are 294.3 kPa and 224.6 kPa respectively while the elevation head at A and B are 24m and 34 m. Calculate the loss of head between A and B.
A lawn sprinkler with three identical arms is used to water a garden by rotating in a horizontal plane by the impulse caused by water flow. Water enters the sprinkler along the axis of rotation at a rate of 45 L/s and leaves the 1.5-cm-diameter nozzles in the tangential direction. The bearing applies a retarding torque of T0 = 40 N·m due to friction at the anticipated operating speeds. For a normal distance of 40 cm between the axis of rotation and the center of the nozzles, determine the angular velocity of the sprinkler shaft.
A hydroelectric power plant uses Pelton-type turbines, in which multiple nozzles are used to accelerate the waterwhich is directed onto the turbine blades, which are exposed to an atmospheric pressure of 101.325 kPa. The water enters the nozzles with an absolute pressure of 500 kPa and a speed of 5 m/s, and the nozzle outlets are exposed to atmospheric pressure and have an internal diameter of 5 cm. Consider that the specific mass of water is 1,000 kg/m3. Determine the mass flow rate of water through each of the nozzles, and explain why the actual mass flow rate will be lower.
A reducing bend with an inlet diameter of 200 mm and exit diameter of 150 mm bends 40 degreesupwards. The water velocity and corresponding pressure at the inlet to the band is 4, 5 m/s and 70 kParespectively. Determine the weight flow, the water flow velocity at the exit to the bend, the bend exitpressure if the friction head loss through the bend section is 2 m and the magnitude and direction ofthe resultant force flowing through the bend.
A fan running at 1480 rpm takes in 6 m^3/min of air at inlet conditions of P_1=950 mbar and T_1=15^0 C. If the fan impeller dimeter is 40 cm and the table tip air angle 20^0, determine the total pressure developed by the fan and the impeller width at exit. Take the radial velocity at the exit as 0.2 times the impeller tip speed. State the assumptions used.
A sharp-edged orifice in the vertical wall of a large tank has a diameter of 25 mm. The coefficient of contraction is 0.620 and the coefficient of velocity is 0.98. If the jet drops 936 mm in a horizontal distance of 2.490 meter from the vena contract, Determine the power loss in watts. a. 5.26 Watts b. 3.78 Watts c. 2.5 Watts d. 1.16 Watts
A reducing elbow is used to deflect water flow at 25 L/s in a horizontal pipe upward by an angle of=45° from the flow direction while accelerating it. The elbow discharges water into the atmosphere. The diameter of the elbow is 15 cm at the inlet and 5 cm at the exit. The elevation difference between the center of the exit and inlet is 40 cm. The mass of the elbow and the water in it is 40 kg. Determine the anchoring force needed to hold the elbow in place, assuming a momentum-flux correction factor of 1.03.
Determine the maximum allowable suction head for a pump with a cavitation constant equal to 0.3 when the total dynamic head is 40 m. Assume that the pump is to operate at sea level and a temperature of 25°C. Patm is 101.3 kN/m2 at 25°C; Pvapor is 3.17 kN/m2 at 25°C and the specific weight of water is 9.78 kN/m³ at 25°C.
Water flows at the rate of 0.80m3/s in a 900-m long pipe. The total head loss in the pipe is 4m. Which of the following most nearly gives the diameter of the pipe using the Darcy-Weisbach formula with f = 0.018?