Water enters a hydraulic turbine through a 30-cmdiameter pipe at a rate of 0.6 m 3 /s
Question:
Water enters a hydraulic turbine through a 30-cmdiameter pipe at a rate of 0.6 m3/s and exits through a 25-cmdiameter pipe. The pressure drop in the turbine is measured by a mercury manometer to be 1.2 m. For a combined turbine??generator efficiency of 83 percent, determine the net electric power output. Disregard the effect of the kinetic energy correction factors.
30 cm Turbine Generator 25 cm AP = 1.2 m Hg
Step by Step Answer:
Water enters a hydraulic turbinegenerator system with a known flow rate pressure drop and efficiency ...View the full answer
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
Related Video
Static friction and kinetic friction are two types of friction that occur when two objects are in contact with each other. Static friction is the force that must be overcome to initiate motion between two surfaces that are in contact with each other but are not moving relative to each other. It is caused by the interlocking of rough surfaces at the microscopic level, and it increases as the force pushing the surfaces together increases. Once motion between the surfaces starts, the static friction is no longer present. Kinetic friction, also known as sliding friction, is the force that opposes the motion of two surfaces that are in contact with each other and are moving relative to each other. It is caused by the rubbing of the surfaces against each other and the resistance of the molecules in the surfaces to being moved. Kinetic friction is generally less than static friction, but it can still be a significant force, especially at high speeds. Both static and kinetic friction can be quantified using a coefficient of friction, which is a dimensionless number that represents the ratio of the frictional force between two surfaces to the normal force (the force perpendicular to the surfaces). The coefficient of static friction is typically greater than the coefficient of kinetic friction for a given pair of surfaces, because it takes more force to overcome the interlocking of the surfaces at rest than to maintain motion once it has started.
Students also viewed these Physics questions
-
Water flows through a horizontal tube similar to that in Fig. 9.20. However in this case, the constricted part of the tube is half the diameter of the larger part. If the water speed is in the larger...
-
A 15-in. galvanized iron pipe is installed on a 1/50 slope (uphill) and carries water at 68F (20oC). What is the pressure drop in the 65-ft-long pipe when the discharge is 18 cfs (ft3/sec)? Assume...
-
Water at 20C flows for 1 mi through a 3-in-diameter horizontal wrought-iron pipe at 250 gal/min. Estimate the head loss and the pressure drop in this length of pipe.
-
Is a flat-rate or flat-fee system more efficient for pricing scarce water? Why?
-
A person with a mass of 78 kg and a volume of 0.086 m3 floats quietly in water. (a) What is the volume of the person that is above water? (b) If an upward force F is applied to the person by a...
-
Tom Zuluaga Company placed an asset in service on January 2, 2012. Its cost was $1,350,000 with an estimated service life of 6 years. Salvage value was estimated to be $90,000. Using the...
-
Using the Newmark method with \(\alpha=\frac{1}{6}\) and \(\beta=\frac{1}{2}\), solve Problem 11.19. Data From Problem 11.19:- Using the central difference method, find the response of the system...
-
Threets Repair Shop was started on May 1 by Erica Threet. A summary of May transactions is presented below. 1. Invested $10,000 cash to start the repair shop. 2. Purchased equipment for $5,000 cash....
-
1. This short CNN video provides the facts and significant details of Malcolm X influence and his death. In an essay, express your impressions and the key details of the biography that captured your...
-
Juvenile long-tailed tits (Aegithalos caudatus), a European relative of the chickadee, "help" adult birds raise offspring, such as by feeding their nestlings. What is the evolutionary advantage of...
-
The velocity profile for turbulent flow in a circular pipe is approximated as u(r) = u max (1 - r/R) 1/n , where n = 9. Determine the kinetic energy correction factor for this flow.
-
A large tank is initially filled with water 5 m above the center of a sharp-edged 10-cm-diameter orifice. The tank water surface is open to the atmosphere, and the orifice drains to the atmosphere....
-
Hanson's Furniture Outlet reported the following comparative income statement for the years ended June 30, 2014 and 2013. During 2014, Hansons Furniture Outlet discovered that the 2013 ending...
-
A competitive firms best strategy for maximizing profits is to: a. set a monopoly price for the product b. differentiate the product c. reduce output to increase price d. minimize costs
-
A producer is: a . a person who purchases a product b . the seller of a product c . the buyer of a product d . a good sow
-
Peanut butter and jelly are: a. substitutes b. complements c. perfect substitutes d. not enough information to answer
-
An increase in income results in: a. no change in demand b. a change in quantity demanded c. a shift in demand d. a movement along the demand curve
-
The following is a noneconomic good: a . a cookie b . a sunset c . a football d . a Lexus automobile
-
An object with an initial velocity of 12 m/s accelerates uniformly for 25 s. (a) If the final velocity is 45 m/s, what is the acceleration? (b) How far does the object travel during this time?
-
(8%) Problem 6: A student attaches a f= 3.5 kHz oscillator to one end of a metal rail of length L = 25 m. The student turns on the oscillator and uses a piezoelectric gauge at the other end to...
-
The following data were collected from a cell concentration sensor measuring absorbance in a biochemical stream. The input u is the flow rate deviation (in dimensionless units) and the sensor output...
-
Unit step response data are given in Table E7.15 for a process with gain K = 2. Fit the data to a first order model with no time delay. Next use linear regression to fit a first-order discrete-time...
-
Data for a person with type 1 diabetes are available as both MATLAB and Excel data files on the book web site. 1 Glucose measurements (y) were recorded every five minutes using a wearable sensor that...
-
4 The manager of the Fleet division of Potlatch Automotive is evaluated on her division's return on investment and residual income. The company requires that all divisions generate a minimum return...
-
At the end of January of the current year, the records of Donner Company showed the following for a particular item that sold at $16 per unit: Transactions Units Amount Inventory, January 1 Purchase,...
-
During Year 1, Chung Corporation earned $6,900 of cash revenue and accrued $3,800 of salaries expense. Required: (Hint. Record the events in general ledger accounts under an accounting equation...
Study smarter with the SolutionInn App