1. The velocity of water is 8 m/s and the pressure is 140 kPa on the discharge side of a pump.a. What is the head of the pump if the velocity is 4 m/s and the pressure is 90 kPa on thesuction side of the pump?b. How much power is required to drive it if the diameter of the suction side is 600 mm?c. If the pump is rated at 120 hp, what is the efficiency of the pump neglecting energylosses in the system?Pj=90 kPaP>=140 kPaVj=4m/s♡ Vz=8m/sSuctionsideDischargeside600 mum

Given, Velocity of water on discharge side, V2 = 8 m/s Pressure on the discharge side, P2 = 140 kPa…

Answered: - The velocity of water is 8 m/s and…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A pump with an 8-in diameter impeller is operating at 1750 rpm and delivering 40 gpm with a total dynamic head of 55 ft. The pump's brake horsepower (BHP) is 1.2 hp under these conditions. Assume constant efficiency. Show your solutions a. Approximate the pump's capacity if impeller size is increased to 10 in. b. Approximate the pump's capacity if pump speed is increased to 3450 rpm. c. Approximate the pump's total dynamic head if impeller size is increased to 10 in. d. Approximate the pump's total dynamic if pump speed is increased to 3450 rpm. e. Approximate BHP if impeller size is increased to 10 in. f. Approximate BHP if pump speed is increased to 3450 rpm.
The pump draws oil with specific gravity of 0.90 from a reservoir and delivers it to the hydraulic cylinder. The cylinder has an inside diameter of 5.0 inch and in 15 seconds the piston must travel 20 inches while exerting a force of 11,000 lb. It is estimated that there are energy losses of 11.5 lb-ft/lb in the suction pipe and 35.0 lb-ft/lb in the discharge pipe. Both pipes are 3/8-in Scheulde 80 steel pipe with inside diameter of 0.423 inch. Calculate the pressure at the cylinder.
3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your own reservoir B elevation then compute for the energy that must be supplied to the pump in kW if said appurtenance has an efficiency of 80%. Compute also the pressure at points 1 and 2. Reservoir A 200 mm pipe Pump 150 mm Reservoir B
3. A pump draws water at 300 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is 20 times the velocity head in the 200 mm diameter and the head loss from 2 to B is 20 times the velocity head in the 150-mm diameter pipe. Assume your own reservoir B elevation then compute for the energy that must be supplied to the pump in kW if said appurtenance has an efficiency of 80%. Compute also the pressure at points 1 and 2. Reservoir A 200 mm pipe Elevation=-20 m Point 1 Point 2 Pump 150 mm A Reservoir B
9.The pump shown delivers 115 li/s of oil, sg = 0.84, toreservoir D at elevation 72 m. The energy lost in thesuction line is 3.2 J/N and in the discharge line is 7.6 J/N. a.Compute the total head added by the pump. b.How many kW does the pump supply the system? c.If the pump is 85% efficient, how much power does it need?
Reservoir A supplies water to a nozzle having a diameter of 8 cm which discharges water 40 m below the reservoir water level at a velocity of 24m/s. a.Determine the horsepower produced by the jet b.Determine the loss of head in the pipeline and nozzle and the efficiency of nozzle.
An oil pump is drawing 18 kW of electric power while pumping oil with density 860 kg/m3 at a rate of 0.1 m3/s. The inlet and outlet diameters of the pipe are 8 cm and 20 cm, respectively. If the pressure rise of oil in the pump is measured to be 250 kPa and the motor efficiency is 95 percent, determine the mechanical efficiency of the pump. Take the kinetic energy correction factor as 1.05. 18 kW Docm Pump Motor 8 сm Oil AP = 250 kPa 0.1 m/s The mechanical efficiency of the pump is |%.
The pump draws water at 30 liters per second from reservoir A and lifts it to reservoir B as shown. The head loss from A to 1 is three times the velocity head in the 150mm diameter pipe and the head loss from 2 to B is twenty times the velocity head in the 100mm diameter pipe. Which of the following most nearly gives the powet delivered by the pump? Choices: 59.38 kW 75.14 kW 44.82 kW 53.96 kW
The following figure shows a pump that extracts water from a reservoir with a volumetric discharge rate of Q L/s. Assume all losses are negligible. a) What would be the pressure at points A and B, when the pump-motor system extracts P kW from the electric grid. The combined efficiency of the pump-motor system is 60%. b) Draw the Energy Grade Line (EGL) and Hydraulic Grade Line (HGL) for this system. Q = 0.055 L/s; P= 20 kW B 1.2 m Atmosphere C 3.0 m Diameter: 10 cm Pump Diameter: 15 cm
Water enters a turbine through a 500 mm diameter pipe under a pressure of 20 kPa. The exhaust pipe is 650 mm in diameter and has a pressure of 10 kPa. Compute the horsepower supplied to the turbine if 600 liter per second of water enters the turbine neglecting head loss. Select one: O a. 10.5 Hp O b. 15.2 Hp O c. 12.3 Hp O d. 16.2 Hp
A hydraulic pump having volume displacement rate is 10×10-5 m 3 /rev. The flow rate deliver by the pump is 1.5×10-3m 3 /s at 1000 rpm speed and 5 MPa pressure. If the input torque on the prime mover is 100 N.m. Find the overall efficiency of the pump and the theoretical torque require to operate the pump. Consider atmospheric pressure is 1×105 Pa.
A nozzle is fitted at the end of a pipe of length 100 m and of diameter 150 mm. For the maximum transmission of power through the nozzle, determine the diameter of nozzle. Take f = .009.

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