The penstock supplies water from a reservoir to the Pelton wheel with a gross head of 500 m. One third of the gross head is lost in friction in the penstock. The rate of flow of water through the nozzle fitted at the end of the penstock is 2.0 m³/s. The angle of deflection of the jet is 165°. Determine the power given by the water to the runner and also the hydraulic efficiency of the Pelton wheel. Take speed ratio = 0.45 and Cv = 1.0

The penstock supplies water from a reservoir to the Pelton wheel with a gross head of 500 m. One third of the gross head is lost in friction in the penstock. The rate of flow of water through the nozzle fitted at the end of the penstock is 2.0 m³/s. The angle of deflection of the jet is 165°. Determine the power given by the water to the runner and also the hydraulic efficiency of the Pelton wheel. Take speed ratio = 0.45 and Cv = 1.0

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

Assume that friction in the suction line is negligible. Toluene @ 35C is pumped from an open reservoir to a tank kept at a gauge pressure of 150 kPa. The pump itself is 3 m below the reservoir, while the discharge tank is 10m above the reservoir. While in the discharge line the friction head amounts to 7.5 m, determine the net positive suction head available for the pump. If the pump has an efficiency of 65%, determine the total power input. At the given temp, the density and vapor pressure of toluene are 862 kg/m3 and 40 mmHg.
An elbow deflects water upward and discharges it to the atmosphere at a specific rate. Determine the gage pressure at the inlet of the elbow and the anchoring force needed to hold the elbow in place. (gage pressure at the outlet is zero)
Q8) The angular velocity of the sprinkler in the figure is 40 rad/s. If the exit velocity is assumed equal (2 m/s) in all orifices, determine the frictional torque at the center. 60° Answer: 1.86 Nm d=15mm 150mm 75mm 75mm
Water is pumped from the upper reservoir to the lower reservoir through the piping system shown. Determine the power required for the pump if the water flow rate is 60 kg/s. The fittings from pipe Di to pipe D2 and from pipe D2 to pipe D3 can be considered to be standard 90° elbows with velocity in pipe 2 for the friction loss. Data: h = 10 m, h2 = 3 m, L1 water viscosity = 1 cP = 103 kg/m-s, p= 1000 kg/m³. The pipe roughness is 0.05 mm. The pump efficiency is 75%. 50 m, L2 = 300 m, L3 = 2 m, D¡ = 0.2 m, D2= 0.5 m, D3 = 0.03 m, (1) D,, L, D2, L, Globe valve D3, L,
The pump shown in the figure below produces a steady flow of 12 gal/s through the nozzle. Determine the nozzle exit diameter, D2, if the exit velocity is to be V₂ = 109 ft/s. D₂ = Pump i Section (1) Section (2) V₂ in
A centrifugal pump with impeller diameter 500mm is designed for a discharge of 1.0m3/s of water. The water enters the pump axially, leaving the impeller with an absolute velocity of 12m/s at an angle of 20degrees to the tangent at the impeller periphery. The impeller is rotating at 700rpm. Determine the exit vane angle and the hydraulic power delivered.
Water is pumped from a lake to a reservoir at 0.021 m^3/s. The pump has a horsepower of 13 and an efficiency of 40%. There is a 12 foot elevation from the lake to the reservoir. Determine the mechanical power needed to pump the water up the reservoir in W.
The pumper truck shown in the figure below is to deliver 1.4 ft3/s to a maximum elevation h of 58 ft above the hydrant. The pressure at the 4-in.-diameter outlet of the hydrant is p-11 psi. If head losses are negligibly small, determine the power that the pump must add to the water. Assume D-4 in. W shall Hydrant hp
A summer camp is located near a 16.7 m waterfall. Tests show that the stream delivers a minimum of 7.645 m³ / min in the course of a year. It is proposed to install a 3-phase induction motor and drive it as a generator. Calculate the approximate horsepower of the motor that could harness 80% of the capacity of the falls.
(12 mins) The penstock supplies water from a reservoir to the Pelton wheel with a gross head of 516 m. One third of the gross head is lost in friction in the penstock. The rate of flow of water through the nozzle fitted at the end of the penstock is 1.8 m³/s. The angle of deflection of the jet is 165º. Determine the power (MW) given by the water to the runner. Take speed ratio = 0.45 and C₁ = 1.0. Use p = 998 kg/m³. Round off your final answer to two decimal places.
The water enters the sprinkler nozzles with a flow rate of 50 liters / hour in the vertical axis direction and leaves the sprinkler nozzles as 25mm diameter jets and making θ angle with the tangential direction as shown in the figure. The length of the sprinkler arms is 0.45 m. Without considering friction effects; For θ = 75 °, set the rotational speed in rpm.
Determine the power required (Watts) to drive a reciprocating pump running at 1 rps and discharges oil (ρ = 850 kg/m3) at a rate of 375.3 gpm. The bore and stroke is 250 mm and 500 mm respectively. The total head developed is 27 m. Round off your answer to 2 decimal places