The water in a large lake is to be used to generate electricity by the installation of a hydraulic turbine-generator at a location where the depth of the water is 50 m. Water is to be supplied at a rate of 5000 kg/s. If the electric power generated is measured to be 1862 kW and the generator efficiency is 95 percent, determine (a) the overall efficiency of the turbine– generator, (b) the mechanical efficiency of the turbine, and (c) the shaft power supplied by the turbine to the generator.

Q: A steam power plant is equipped with a condenser that removes 500 MW of heat from steam condensing…

A: For solution refer below images.

Q: An oll pump is drawing 18 kW of electric power while pumping oil with density 860 kg/m³ at a rate of…

A: Here, given data power(We)=18kWdensity(ρ)=860kg/m3flow rate(Q)=0.1…

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A: Given:-  There is a ventilation fan in a bathroom of a building Volume flow rate (Q) = 25 L/s =…

Q: What is the second-law efficiency? How does it differ from the first-law efficiency?

A: Before understanding the first and second law efficiency and the difference we have to understand…

Q: Consider a pumped hydro system that is used for energy storage. During off-peak hours, excess…

A: Given: The height of reservoir, H = 100 m The flow rate, Q = 650 ltr/s The power, P = 1000 MWh The…

Q: In a power plant, water (density = 1000 kg/m3) is pumped from 80 kPa to 3 MPa. The pump has an %3D…

A: Given:P1=80 kPaP2=3 MPaisentropic efficiency, η=0.85

Q: refrigeration system absorbs heat from a space at 5 °C at a rate of 25 kW and rejects heat to water…

A: The temperaturer of the refrigerating space is .The heat taken from refrigerating space is .The mass…

Q: Consider an underground water source whose free surface is 60 m below ground level. The water is to…

A: Given data: d1=10 cmd2=15 cmQ=0.015 m3/s Need to determine the power input to the pump required for…

Q: A river flowing steadily at a rate of 180 m3/s is considered for hydroelectric power generation. It…

A: Data given-  Flow rate Q• = 180 m3/s  H = 60 m

Q: During the power stroke of a non-flow energy system, the internal energy of the working fluid is…

A: Please refer next page for the answer.

Q: steam power plant is equipped with a condenser that removes 500 MW of heat from steam condensing at…

A: Given:Heat removed from the condenser, Q=500 MWTemperature of condensing steam, Tc=30°COveraal heat…

Q: The pump of a water distribution system is powered by a 15-kW electric motor whose efficiency is 90…

A: Given that → Power inputW.=15 kW                    nmotor=0.9                    V.=50LS=50x10-3…

Q: A refrigeration system absorbs heat from a space at 2 °C at a rate of 6.9 kW and rejects heat to…

A:

Q: Water in the rural areas is often extracted from underground water source whose free surface is 65m…

A: To Find :  The power input to the pump in kW . Given :  The height of free surface of water below…

Q: A 700 MW power plant has a thermal efficiency of 30% and is cooled down by a nearby river. Determine…

A:

Q: The water in a large lake is to be used to generate electricity by the installation of a hydraulic…

A: h=75mm˙=4500 kg/sPE=1660 kWηgen=92%

Q: A river flows to a lake at a rate of 120 m/s. The river is located at an elevation of 100 m above…

A: Given data: Volumetric flow rate of river into the lake, Q=120 m3/s. River is located at a elevation…

Q: Steam turbine is receiving a 1,831 lb/hr of steam, determine the kW output of the turbine if the…

A: Given: m˙=1831 lb/hr WT,out =1906 btu/lb

Q: Water passes through a turbine at a rate of 10 kg/s. If the decrease of specific mechanical flow…

A:

Q: Water is pumped from a lake to a storage tank 25 m above at a rate of 70 L's while consuming 22.4 kW…

A: Given data Water is pumped from a lake to a storage tank 25 m above at a rate of 70 L/s while…

Q: At a certain location, wind is blowing steadily at 9 m/s. Determine the mechanical energy of air per…

A:

Q: A 160 MW power plant consumes fuel at a rate of 60 tons/h. if the chemical energy released by the…

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Q: A motor pulls a 1000 kg object up a hill with a 10 degree incline. It starts initially at rest and…

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Q: A rigid tank contains hot fluid that is cooled while being stirred by a paddle wheel. The internal…

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Q: The elevation of the dam is about 110 m above the power plant, and the total irreversible head loss…

A:

Q: An automobile engine consumes fuel at a rate of 22 L/h and delivers 65 kW of power to the wheels. If…

A: Given data: V˙=22 L/hP=65 kWC=44,000 kJ/kgρ=0.8 g/cm3 Need to determine the efficiency of the…

Q: A 10 hp fan is used in a room for circulation purposes. Assuming a sealed room. that is well…

A:

Q: Consider a river flowing toward a lake at an average velocity of 3 m/s at a rate of 500 m³ls at a…

A:

Q: The utility company is selling electric power for $0.06/kWh at night, and $0.13/kWh for power…

A: Calculate the power required for pumping operation. Pin=γQH+hLηp Here, Pin is the power required for…

Q: Consider an underground water source whose free surface is 60 m below ground level. The water is to…

A: Free surface below the ground level, H1=60mDelivery point above the ground by pump, H2=5mPipe…

Q: lectric power is to be generated by installing a hydraulic turbine-generator at a site 120 m below…

A: To determine the power generation potential, we need to calculate the potential energy available…

Q: 1. Consider a river flowing toward a lake at an average velocity of 3 m/s at a rate of 500 m³/s at a…

A: The total mechanical energy will be - Total mechanical energy =  Kinetic energy + Potential…

Q: A car engine with a power output of 64 hp has a thermal efficiency of 24%. Determine the fuel…

A:

Q: A steam power plant with a power output of 170 MW consumes coal at a rate of 60 tons/h. If the…

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Q: A well-insulated steam turbine receives 0.456 kg/s of steam at 34 m/s velocity and 3547.15 KJ/kg.…

A:

Q: An 80-percent-efficient pump with a power input of 30 hp is pumping water from a lake to a nearby…

A:

Q: The pump of a water distribution system is powered by a 15-kW electric motor whose efficiency is 95…

A:

Q: Steam flows steadily through a turbine at a rate of 45,000 lbm/h. It enters at 1000 psi and 900°F…

A: Given data:- Steam flows rate = 45,000 lbm/h=5.67 Kg/s It enters at 1000 psi and 900 °F and leaves…

Q: Consider an under ground water source whose free surface is 60 m below ground level. The water is to…

A:

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.