QUESTION 1A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction ofmotion and leaves it at 150° absolute with the direction of motion. The absolute inletvelocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore frictionacross the vanes. Calculate:1.1 the vane inlet angle.1.2 the vane outlet angle.1.3 the power/kg of water and,1.4 the hydraulic efficiency.QUESTION 2A pipeline of 50 mm diameter and 4.5 km length connects two reservoirs whoseconstant difference of water level is 12 m. A branch pipe 1.25 km long and taken froma point distance of 1.5 km from reservoir A, leads to reservoir C whose water level is15 m below that of reservoir A. Find the diameter of the branch pipe so that the flowinto both the reservoirs is the same. Assume the coefficient of friction for each pipe,f = 0.0075, and neglect minor losses.QUESTION 3The plunger diameter of a single-acting reciprocating pump is 115 mm and the strokeis 230 mm. The suction pipe is 90 mm in diameter and 4.2 m long. If cavitation takesplace at the suction head of 4 m, the barometer stands at 10.3 m of water, and thewater level in the sump is 3 m below the pump cylinder axis.3.1 Find the maximum allowable speed to operate the pump3.2 What power is expected in overcoming friction at this speed, take f = 0QUESTION 4Water is discharged from the impeller of a centrifugal pump against a pressure of10.5 m and a tangential velocity component of 14 m/s. The impeller has a diameterof 60 cm. Calculate the required diameter of the vortex chamber to increase thedelivery pressure to 15 m.[10]

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QUESTION 1 A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.1 the vane inlet angle. 1.2 the vane outlet angle. 1.3 the power/kg of water and, 1.4 the hydraulic efficiency.

QUESTION 1 A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.1 the vane inlet angle. 1.2 the vane outlet angle. 1.3 the power/kg of water and, 1.4 the hydraulic efficiency.

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

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A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction ofmotion and leaves it at 150° absolute with the direction of motion. The absolute inletvelocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore frictionacross the vanes. Calculate:1. the power/kg of water
A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate:1.1 the vane inlet angle. 1.2 the vane outlet angle. 1.3 the power/kg of water and, 1.4 the hydraulic efficiency.
QUESTION 1 A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.1 the vane inlet angle. 1.2 the vane outlet angle. 1.3 the power/kg of water and, 1.4 the hydraulic efficiency.
A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.1 the vane inlet angle. 1.2 the vane outlet angle. 1.3 the power/kg of water and, 1.4 the hydraulic efficiency.
A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.1 the vane inlet angle. 1.2 the vane outlet angle. 1.3 the power/kg of water and,
A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction ofmotion and leaves it at 150° absolute with the direction of motion. The absolute inletvelocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore frictionacross the vanes. Calculate:1. the hydraulic efficiency.
A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.3 the power/kg of water and, 1.4 the hydraulic efficiency.
A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.1 the vane inlet angle. 1.2 the vane outlet angle.
A jet of freshwater strikes a series of vanes of a turbine at 25 degrees with the direction of motion and leaves it at 150 degrees absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate: 1.1 the vane Inlet angle 1.2 the vane outlet angle 1.3 the power/kg of water and Hydraulic efficiency
Q2/ An outward flow reaction turbine has tangential velocity at its inner rim as 20 m/s, and ratio of radii is 0.9. The turbine is placed 1 m below the water surface and blade angle are 90° and 20° at inlet and outlet respectively. The radial velocity of flow at inlet is 6 m/s. Neglecting frictional losses and taking the discharge as radial, draw velocity triangles at inlet and outlet and find: (a) guide vane angle (b) the velocity of water from the guides. (c) total head of water (d) hydraulic efficiency
A jet of freshwater strikes a series of vanes of a turbine at 25° with the direction of motion and leaves it at 150° absolute with the direction of motion. The absolute inlet velocity of the jet is 25 m/s and the vanes move at a velocity of 10 m/s. Ignore friction across the vanes. Calculate:1. the vane inlet angle.
While rotating at 900 rpm, a centrifugal pump delivers 2500 gpm of water at ahead of 75 ft. If the impeller diameter is 1.5 ft. and the blade width is 1.75 in.,find the (a) blade angle β2, (b) radial velocity Vr2, and (c) blade speed u2. Assumeno whirl at the inlet.Ans: β2=12.5°; Vr2=8.1 ft./s; u2=70.7 ft./s