(P6.41)- A window, in a vertical wall, is at a distance of 30 m above the ground level. A jet of water, issuing from a nozzle of diameter 50 mm is to strike the window. the rate of flow of water through the nozzle is 3.5 m^3 minute and nozzles is situated at a distance of 1 m above ground level. Find the greatest horizontal distance from the wall of the nozzle so that jet strike the window.

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(P6.40)-A nozzle is stared at a distance of 1 m above the ground level and is inclined at an angle of 45 degree to the horizontal. The diameter of the nozzle is 50 mm and the jet of water from the nozzle strikes the ground at a horizontal distance of 4 m. Find the rate of flow of water

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(P6.39)-A free-brigade man is holding a fire stream nozzle of 50 mm diameter as shown in fig. 6.32. The jet issues out with a velocity of 13 m/s and strikes the window. Find the angel or angels of inclination with the jet issues from the nozzles. What will be the amount of water failing on the windows?

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(P6.38)- A vertical wall is of m in height. A jet of water is coming out from a nozzle with a velocity of 20 m/s. The nozzles is situated at a distance of 20 m from the vertical wall. Find the angel of projection of the nozzles to the horizontal so that jet of water just clears the top of wall.

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(P6.37)A lawn sprinkler shown in fig. 6.29 has 0.8 cm diameter nozzle at the end of a rotating arm and discharges water at the rate of 10 m/m velocity. determine the torque required to hold the rotating arm stationary. Also determine the constant speed of rotation of the arm, if free to rotate.

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(P6.36)-A lawn sprinkler with two nozzle of diameter 4 mm each is connected across a top of water as shown in Fig. 6.28. The nozzle are at a distance of 30 cm and 20 cm from the center of the top. The rate of flow of water through tap is 120 cm^3/s. The nozzles discharge water in the downward direction. Determine the angular speed at which the sprinkler will rate free.

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(P6.35)-The diameter of a pipe gradually reduces from 1 m as shown. the pressure intensity at the center-line of 1 m section 7.848 kN/m^2 and rate of water through the pipe is 600 liters/s. Find the intensity of pressure at the center-line of 0.7 m section. Also determine the force exerted by flowing water on transition of the pipe.

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(P6.34)-A nozzle of diameter 20 mm is fixed to a pipe of diameter 40 mm. Find the force exerted by the nozzle on the water which is flowing through the pipe at the rate of 1.2 m^3/Minute.

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(P6.33)-A pipe of 300 mm diameter conveying 0.30 m^3/s of water has a right angled bend in a horizontal plan. Find the resultant force exerted on the bend if the pressure at inlet and outlet of the bend are 24.525 N/cm^2 and 23.544 N/cm^2.

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(P6.32)-In a 45 degree bend a rectangular air duct of 1 m^2 cross-sectional area is gradually reduced to 0.5 m^2 area. Find the magnitude and direction of the force required to hold the duct in position if the velocity of flow at the 1 m^2 section is 10m/s and pressure is 2.943 N/cm^2. take density of air as 1.16kg/m^3.

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(P6.31)- A 300 mm diameter pipe carries water under a head of 20 meters with a velocity of 3.5 m/s. If the axis of the pipe turns through 45 degree, find the magnitude and direction of the resultant force at the bend.

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(P6.30)-230 liters/s of water is flowing in a pipe having a diameter of 300 mm. If the pipe bent by 135 degree (that is change from initial to final direction is 135 degree). Fine the magnitude and direction of the resultant force on the bend. The pressure of water flowing is 39.24N/cm^2.

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(P6.29)-A 45 degree reducing band in a pipe line, The diameter at the inlet and outlet of the band being 600 mm and 300 mm respectively, Find the force exerted by water on the band if the intensity of pressure at inlet to bend 8.829N/Cm^2 and rete of flow of water is 600 liters/s.

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(P6.28)- A pitot-tube is inserted in a pipe of 300 mm diameter. The static pressure in pipe is 100 mm of mercury (vacuum). The stagnation pressure at the center of the pipe, recorded by the pitot-tube is 0.981 N/cm^2. Calculate the rate of flow of water through pipe, if the mean velocity of floe is 0.85 times the central velocity. Take Cv = 0.98.

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(6.27)-A sub-marine moves horizontally in sea and has it axis 15 m below the surface of water. A pitot-tube properly placed just in front of the sub-marine and along its axis is connected to the two limbs of a U-tube containing mercury. The difference of mercury level is found to be 170mm. Find the speed of the sub-marine knowing that sp. gr. of mercury is 13.6 and that of sea-water is 1.026 with respect of fresh water.

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(P6.26)-A pitot-static is used to measure the velocity of water in pipe. The stagnation pressure head is 6 m and static pressure head is 5 m. calculate the velocity of flow assuming the co-efficient of tube equal to 0.98.

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(6.25)-Find the velocity of the flow of an oil through a pipe, when the difference of mercury level in a difference U-tube manometer connected to the two tappings of the pitot-tube is 100 mm. Take co-efficient of pitot-tube 0.98 and sp. gr. of oil =0.8

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(P6.24)-A pilot-Static tube placed in the center of a 300 mm pipe line has one orifice pointing upstream and other perpendicular to it. The mean velocity in the pipe is 0.80 of the central velocity. Find the discharge through the pipe if the pressure difference between the two orifices is 60 mm of water. Take the co-efficient of pitot tube as Cv =0.98

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(P6.23)-An orifice meter with orifice diameter 15 cm is inserted in a pipe of 30 cm diameter. The pressure difference measured by a mercury oil differential manometer on the two sides of the orifice meter gives a reading of 50cm of mercury. Find the rate of flow of oil of sp. gr. 0.9 when the co-efficient of discharge of the orifice meter = 0.64.

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(P6.22)-An orifice meter with orifice diameter 10 cm is inserted in a pipe of 20 cm diameter. The pressure gauge fitted upstream and downstream of the orifice meter gives readings of 19.62N/Cm^2 and 9.81 N/Cm^2 respectively. Co-efficient of discharge for the orifice meter is given as 0.6. Find the discharge of water through pipe

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