A pump discharges water through a horizontal pipeline at 30 L/s. At a point in the suction side of the pump, the diameter is 100 mm and the pressure is 125 kPa while at a point in the discharge side, the diameter is 40 mm and the pressure is 409 kPa. Neglecting losses and elevation changes, what is the efficiency of the pump if it is rated at 25 hp? 67.40% 87.21% 90.35% 81.90% None of the Above

A pump discharges water through a horizontal pipeline at 30 L/s. At a point in the suction side of the pump, the diameter is 100 mm and the pressure is 125 kPa while at a point in the discharge side, the diameter is 40 mm and the pressure is 409 kPa. Neglecting losses and elevation changes, what is the efficiency of the pump if it is rated at 25 hp? 67.40% 87.21% 90.35% 81.90% None of the Above

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Water entering through 5 ft long and 1 inch diameter pipe has a flow rate of 100 kg/min at a temperature of 100°C and pressure of 2 bar. The density of water at these conditions is 961.5 kg/m3. Calculate the rate of work done at the entrance of pipe.
Consider the piping system shown . The average speed of water flowing through the 600-mm-diameter section of the piping system is 5 m/s. What is the volume flow rate of water in the piping system? Express the volume flow rate in L/s. For the case of steady flow of water through the piping system, what is the average speed of water in the 300-mm-diameter section of the system?
The suction side of a pipe system is as shown in the figure. The pump discharges 495 gpm of water under a total head of 100 ft at 40°F. Atmospheric pressure = 32.7 ft of water. If the required NPSH is 9 ft, will there be a cavitation problem? Please note that 1 cfs equals 449 gpm. 12 ft 6 ft Diameter L = 300 ft Steel = 10 in 5
At what speed, when pumping water, should the 105 cm pump of the figure below run to realize, at highest efficiency, (a) a head of 30 m? For this condition, what are the resulting (b) flow rate, and (c) brake horsepower? n=710 r/min 120 7.5 NPSH 6.0 105 105-cm dia. 4.5 3.0 90 96.5-cm dia. 75 89-cm dia. 86% 84% 45 1000 bhp 30 15 30 45 60 75 90 105 m/min por on NPSH, m 1500 bhp 1250 bhp %88 %88 • %08 %09 Total head, m
Example 1: A flow of water from a reservoir to a pipe of different diameters shown in Figure below. Calculate 1) the discharge and velocity at each pipe, 2) the pressure in each pipe and 3) the energy and hydraulic grade lines. water 10m D1-300mm D2-200mm D3=100mm D4-50mm (nozzel)
A PIPELINE WITH A PUMP LEADS TO A NOZZLE AS SHOWN. FIND THE FLON RATE WHEN PUMP DEVELOPS AN 80FEET HEAD. ASSUME HEAD LOST IN THE 8-INCH PIPE TO BE THERE TIMES ITS VELOCITY HEAD WHILE THE HEAD LOST IN THE 4-INCH PIPE TO BE TEN TIMES VELOCITY HEAD. FIND: a)COMPUTE THE FLOW RATE b) FIND THE PRESSURE HEAD AT THE SUCTION SIDE. PLEASE ANSWER IMMEDIATELY WITH COMPLETE SOLUTION THANK YOU!
Water is pumped from a supply reservoir to a ductile- iron water-transmission line, as shown in Figure 2.26. The high point of the transmission line is at point A, 1 km downstream of the supply reservoir, and the low point of the transmission line is at point B, 1 km downstream of A. If the flow rate through the pipeline is 1 m3/s, the diameter of the pipe is 750 mm, and the pressure at A is to be 350 kPa, then: (a) estimate the head that must be added by the pump; (b) estimate the power supplied by the pump; and (c) calculate the water pressure at B. Supply reservoir Elev. 7 m Pump Elev. 10 m Transmission line Elev. 4 m- B Figure 2.26: Water pumped into a transmission line
A closed tank contains 20 m deep water. A hose is connected as shown such that the nozzle (diameter = 1cm) is directed straight up, If the air gage pressure inside the tank is 20©kPa, solve the actual mass flowrate if the coefficient of discharge through the nozzle is 0.6. AIR 20 m O 1.59kg/s O 1.22kg/s O 1.86kg/s O 1.33kg/s
1) A manometer is attached to two pipes as shown. If knowing mercury SG is 13.6, sea water SG is 1.035, and fresh water p is 1,000 kg/m³, determine the pressure difference between two pipelines at the centers. Fresh Water h. -60 cm Air hair -70 cm hea <- 40 cm Mercury Sea Water hi -10 cm
A 25-mm-diameter pipe 35m long is used to convey oil. The oil has a density of 880kg/m³ and a kinematic viscosity of 0.25×10*m³/s. The discharge in the pipe is Q=24x10*m³/min. Given that the pipe is placed horizontally and there are no any minor losses. Determine the pressure drop between the entrance and exit of pipe.