An impeller of a centrifugal pump runs at 90 rpm under a net head of 10 m and has vanes inclined at 120° to the direction of motion at outlet. The diameter of impeller at exit is double than that at inlet and velocity of flow is constant at 2.5 m/s. The manometric efficiency is 75 %. Find (a) diameter of impeller at exit and (b) Vane angle at inlet.

An impeller of a centrifugal pump runs at 90 rpm under a net head of 10 m and has vanes inclined at 120° to the direction of motion at outlet. The diameter of impeller at exit is double than that at inlet and velocity of flow is constant at 2.5 m/s. The manometric efficiency is 75 %. Find (a) diameter of impeller at exit and (b) Vane angle at inlet.

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

Related questions

Q: A centrifugal pump is used to lift water from a water reservoir with level 2 m below the pump center…

Q: Q5: A centrifugal pump running at 900 rpm and delivering 0.3 m³/s of water against a head of 25 m,…

A: To find: The power required and the width of the impeller. Given: The speed of the pump is N=900…

Q: – 24 in.- D 10 in. В C - y --

Q: Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device…

Q: Q.1 Acentrifugal pump running at 500 rpm and at its maximum efficier is delivering a head of 30 m at…

A: To find: The head H in meters and flow rate Q in liters per minute at maximum efficiency. Given: The…

Q: A centrifugal pump having an overall efficiency of 75%, delivers 1850 liters of water per minute to…

A: Given:Overall efficiency of the pump, η=75 %Water flow rate, Q=1850 L/min=1850×10-360m3/sHeight of…

Q: trifugal pump lifts water from a sump to a m is suction lift. The suction and delivery on pipe is…

Q: A centrifugal pump is used to lift water from a water reservoir with level 1 m below the pump center…

Q: 4.1 The bucket ofa Pelton wheel which rotates at 100 rpm deflect the jet with diameter 50 cm through…

A: NOTE:- As per our company guidelines we are supposed to answer only 3 sub-parts. Kindly repost other…

Q: a plant installed a single-suction center fugal pump with a capacity of 300 gpm under 200 tt at 1200…

Q: A centrifugal pump having extemal and intemal diamcters as 750 mm and 400 mm respectively is…

A: Answer: (a) 16 o (b) 123 kJFor a step-by-step solution have a look through the attached pictures of…

Q: EX1: Given are the following data for a commercial centrifugal water pump: ri =10 cm, r2 = 17.5 cm,…

A: A Centrifugal pump is a mechanical device that converts the low-pressure fluid into the…

Q: Ex: A centrifugal pump delivers (0.07 m³/s) of water at (1500 rpm) and the velocity of flow through…

Q: and discharges 1900 liters water per second, the average lift being 6 m. The angle which the vanes…

Q: A centrifugal pump has d1 = 7 in., d2 = 13 in., b1 = 4 in., b2 = 3 in., 1 = 25, 2 = 40 and…

A: Find the velocity and discharge as follows.

Q: A centrifugal pump is running at 1000 r.p.m. The outlet vane angle of the impeller is 30° and…

Q: the blades due to friction. Taking the blade angles at the inlet and outlet to be equal, find the…

Q: Dz 03: A centrifugal pump has an impeller with inner and outer diameters of (20 cm) and (35) cm)…

Q: 3-137 For Problem 3-136 estimate the stresses at the inner and outer surfaces at section B- B,…

Q: Q5/ A centrifugal pump impeller runs at 1500 rpm & has internal & external diameters of 0.2 n & 0.4…

A: A centrifugal pump is a mechanical device that moves a fluid by transferring rotational energy from…

Q: The performance characteristics of a certain centrifugal pump are determined from anexperimental…

A: The objective of the question is to calculate the actual head rise across the pump and estimate the…

Q: The pressure of the water base of a Pelton Wheel is 4850 kPa and the velocity at the same point is 6…

Q: Find the power consumed by a centrifugal pump having the following specification: overall efficiency…

A: Given data Overall efficiency = 70% = 0.7 Discharge (Q) = 64 lit/s = 64x10-3 m3/s Head (h) = 50m

Q: A centrifugal pump is used to lift water from a water reservoir with level 3 m below the pump center…

A: Level of lower reservoir from pump center line, H1=3 mLevel of upper reservoir from pump center…

Q: Parallel-connected double centrifugal pumps each have a specific speed of 28 and operate at 1350 rpm…

A: Given: For parallel connected double centrifugal pump, The specific speed, Ns = 28 The speed of…

Q: A Pelton wheel develops 1800 kW under a head of 120 m while running at 210 rpm and discharging of…

Q: A reaction turbine has guide vanes at an angle of 30° and the runner blades make an angle of 80°…

Q: turbine

A: α = Exponent factor v = wind Speed =5 m/s Pa = Density of Air = 1 kg/m³ 1 D = Diameter = 10m…

Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

100%

E
0
B
V₁₁
V.
W2
V2
U₁
už
V₁2
H
G
V ₁₁ = V₁
V12
LL
F
120°
Outlet
Inlet

An impeller of a centrifugal pump runs at 90 rpm under a net
head of 10 m and has vanes inclined at 120° to the direction
of motion at outlet. The diameter of impeller at exit is double
than that at inlet and velocity of flow is constant at 2.5 m/s.
The manometric efficiency is 75 %.
Find: (a) diameter of impeller at exit and
(b) Vane angle at inlet.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

PROBLEM 5 An axial flow pump is required to deliver 1m3/s at 7m head while running at 960 rpm. Its outer diameter is 50 and hub diameter is 25 cm. Find the following: (1) flow velocity, which is assumed to be constant from hub to tip, and A. 4.59 m/s B. 6.791 m/s C. 60.7 m/s D. 39.3 m/s (2) power required to drive the pump if overall efficiency is 84%. A. 81.75 kW B. 12.03 kW C. 40.7 kW D. 60.9 kW
A centrifugal pump pumps water at a flow rate of 7 m³/s to a height of 10 m. If the pump works at the best efficiency point, find the pump impeller diameter, pump speed, the best efficiency value of the pump, the head at the best efficiency value, and the specific speed of the pump, given that CQ=0.15 CH=6 CP=0.75.
Please answer
For an inward flow reaction turbine has an external diameter as 1.5 m and width of 13.5 cm. The turbine speed is 600 rpm and the water flow rate is 420m / min. The turbine operates under a head of 260 m and developing 16.12 MW. Calculate efficiency, baled angle at inlet, and guide vane angle at inlet, if the velocity at the draft tube inlet is 16 m / s.
A. A water jet of diameter 180 mm impinges on the buckets of a Pelton turbine having overall efficiency of 85% while operating under a net head of 500 m and at speed of 420 rpm. Find the specific speed of the turbine. Take coefficient of velocity of the jet as 0.98 and speed ratio as 0.46. B. The pitch circle diameter of a Pelton wheel is 0.9 m. A jet of water of diameter 80 mm gets deflected by an angle of 170° when it impinges on the buckets. The bucket friction coefficient and coefficient of velocity of jet can be taken as 0.93 and 0.97 respectively. If the net head available on the wheel is 500 m and speed ratio is 0.45, calculate (a) the power transferred to to the wheel by the jet, (b) hydraulic efficiency, and (c) specific speed of the turbine. Take mechanical efficiency of wheel as 0.9.
An axial flow pump discharges water at the rate of 78 m³/min and runs at 550 rpm. The total head is 10 m. Assume blade velocity of 22 m/s, flow velocity of 4.5 m/s, hydraulic efficiency of 0.87, and overall pump efficiency of 0.83. Calculate Cr OP 3.1. The power delivered to the water, and power input The impeller hub diameter and tip diameter 3.2. 3.3. The inlet and outlet blade angles for the rotor 30 07:30 S
A centrifugal pump is used to lift water from a water reservoir with level 3 m below the pump center line. Then, to another reservoir with level 8 m above the center line. Pressure gages readings from the suction and discharge are 1 bar and 4 bars respectively. The flow rate at 1.28 m /s with pipe inside diameters of 400 mm at suction and 250 mm at the discharge. Assume over all head loss due to friction of 4 J/N, what is the suction head in meter?
An inward flow turbine is supplied with 245L of water per second and works under a total head of 30m. The velocity of wheel periphery at inlet is 16m/s. The outlet pipe of the turbine is 28cm in diameter. The radial velocity is constant. Neglecting friction, calculate (1) The vane angle at inlet (2) The guide blade angle (3)Power Show schematic diagram ang provide solutions.
A centrifugal pump impeller has an external diameter of 1.2 m and internal diameter of 0.8 m. The width of the impeller at outlet is 0.175 m and the blade angle at outlet is 65 degrees. The flow velocities at inlet and outlet are the same (Va1 = Va2). This pump delivers 1.55 m3/s of water at 210 rpm. For theoretical performance, calculate: 1-The flow velocity . 2-blade speed at outlet. 3-blade angle at inlet (in degrees). 4-the developed head. 5-The pressure rise across the impeller. 6-The number of blades . 7-The NPSH . %3D
A centrifugal pump discharges 96L/s while running at 1380rpm against a net head of 14m. The manometric efficiency of the pump is 0.92. If the vane angle at the outlet is 35 deg, estimate the outer diameter of the impeller and its width at that diameter. Assume the velocity of flow.
Please solve it.
Consider a centrifugal pump with curved blades has blade angle at the outlet section equal to 30o, and no shock/no swirl at inlet. Construct the velocity diagrams of this blade at inlet and outlet sections.