A windmill has a diameter of 8ft. It converts wind energy at an efficiency of 65% of the Betz's Limit, when connected to an electrical generator. What is the electric power output at a wind velocity at 30 mph in Watts? ??????Givens ??????=12???3??Pavail=12ρAV3Cp ????????????=1.225???3DensityofAir=1.225kgm3 ????????????????=0.59

Q: well water is pumped into a thank that is 25 meters high through a pipe with an inner diameter of…

A: Given data:

Q: A hydraulic turbine generator was installed at a site 101 m below the free surface of a large water…

A: Given Data: The mass flow rate of water, m=859 kg/s Mechanical power, 800 kW Electrical power, 779…

Q: Give examples of pump efficiency and turbine efficiency?

A: The range of the efficiency of a smaller centrifugal pump varies from 50 to 70 percent whereas for…

Q: Water flowing steadily at a rate of 0.17 m3/s is deflected downward by an angled elbow and exits to…

A: Given: ρ=1000kg/m3D=30cm=0.3md=10cm=0.1mh=50cm=0.5mVelbow=0.03m3Q=0.17m3/s

Q: The horizontal pump in Fig. P3.178 discharges 20 ° C waterat 57 m 3 /h. Neglecting losses, what…

A: Given: The volumetric flow rate, Q = 57 m3/h The diameter of pipe 1, d1 = 9 cm The diameter of the…

Q: Florida Tidal power plant is one of the famous efficient tidal plant. What is the energy or power…

A:

Q: The minimum power needed by a water pump that increases the pressure of 4 kg/s from 100 kPa to 6 MPa…

A: Given data,  P=100 KPa  p=6 MPa = 6000 KPa  Mass flow rate is 4kg/s  Let's density of water is 1000…

Q: Q2// a single row impulse turbine receive 3 kg/s of steam with velocity 425 m/s. The blade speed…

A: Given: Mass flow rate of the steam is 3 kg/s. Steam with initial velocity is 425 m/s The blade speed…

Q: A fireboat is to fight fires at coastal areas by drawing seawater with a density of 1030 kg/m^3…

A:

Q: Consider water flow through a horizontal, short pipe at a rate of 80 kg/min. The velocity at the…

A: Consider the diagram shown below for the pipe flow.

Q: How does the Bernoulli’s Theorem Apparatus show the relationship between the kinetic and potential…

A: According to Bernoulli's theorem, total energy (in the head form) remains constant. Assuming there…

Q: A pump is used to raise water to a reservoir through 800 m of 20 cm diameter pipe (f=0.033). If the…

A:

Q: A steam turbine operates with inlet conditions of 500 C and 2 MPa, and exit conditions of 10 kPa and…

A: given that, P1=2MPa T1=500C P2=10kPa x=0.95 W=900KJ/kg from the steam table , at inlet, h1=3468.09…

Q: Consider water flow through a horizontal, short garden hose at a rate of 30 kg/min. The velocity at…

A: Given: The mass flow rate of the water, m = 30 kg/min The inlet velocity of the water, v1 = 1.5 m/s…

Q: The power available in a jet having a cross-sectional area of 0.005 m2 with a velocity of 25.8 m/s

A:

Q: Consider a centrifugal blower that has a radius of 20 cm and a blade width of 8.2 cm at the…

A: Given data: The radius of the centrifugal blower at the inlet to the impeller is r1 = 20 cm = 0.20…

Q: A garden hose attached with a nozzle is used to fill a 20-gal bucket. The inner diameter of the hose…

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Q: a compressor draws in 0.25m^3/s of air whose density is 1.26kg/m^3 and discharges it with a density…

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Q: A fan with a capacity of 1.5 m³/s draws air at a static pressure of 3.0 cm of water through a duct.…

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Q: Air enters a nozzle at 2.21 kg/m³ and 30m/s and leaves at 0.762 kg/m³ and 180m/s. The inlet area of…

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Q: Water with a specific volume of 0.001 m3×kg-1 flows through a centrifugal pump that operates under…

A:

Q: Determine the maximum available work [kJ/kg] that could be obtained from a power plant using water…

A:

Q: A 2-kW pump is used to pump kerosene (ρ = 0.820 kg/L) from a tank on the ground to a tank at a…

A: We know that,  P=ρgQH                                     (where P=Head Power ,H=head difference and…

Q: Consider water flow through a horizontal, short garden hose at a rate of 30 kg/min. The velocity at…

A: Given, mass flow rate of water, m˙=30 kg/min=0.5 kg/s Velocity of the flow at inlet and outlet of a…

Q: Why efficiency of gas turbines is lower compared to internal combustion engines?

A: A gas turbine is a mechanical device that is used to convert the gaseous energy to the mechanical…

Q: The diameters of an impeller of a centrifugal pump at inlet and outlet are 30 cm and 60 cm…

A: Inlet Diameter = 30 cm = 0.3 m Outlet diameter = 60 cm = 0.6 m Velocity of flow at outlet = 2 m/s…

Q: A water jet strikes a stationary vertical plate horizontally at a rate of 7 kg/s with a velocity of…

A: Given: The mass flow rate of the water is m=7 kg/s. The velocity of the water strike is v=35 km/h.

Q: can a wind turbine have an efficiency of 85% ? Give reasons to support your answer

A: No, a wind turbine can not have an efficiency of 85%. Wind turbine efficiency is the amount of…

Q: A 22 L kerosene tank is filled with 2 cm diameter hose equipped with a 1.5 cm nozzle meter If it…

A:

Q: Can the combined turbine–generator efficiency be greater than either the turbine efficiency or the…

A: Consider the efficiency of the turbine be ηT, the efficiency of the generator be ηG and the combined…

Q: Two pipes are connected in series having a length and friction factor, “f” equal to each other. If…

A: To find: The ratio of velocity of first pipe to second pipe. Given: The diameter of the first pipe…

Q: The pump is to increase the pressure of 0.3 m3/s of water from 100 kPa to 500 kPa. If the pump is…

A:

Q: The power output of an adiabatic steam turbine is 5 MW, and the inlet and the exit conditions of the…

A: Given data W=5 MW

Q: b) By considering the development of a wind farm consisting of 10-m diameter wind turbines with…

A: we will calculate the power generated

Q: er at peak design conditions. Consider a wind turbine with a 75-m blade span subjected to 25-km…

A:

Q: A garden hose attached with a nozzle is used to fill a 20-gal bucket. The inner diameter of the hose…

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Q: The diameters of an impeller of a centrifugal pump at inlet and outlet are 30 cm and 60 cm…

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Q: A centrifugal pump operating under steady-flow conditions 2.28 m/min of water with a specific volume…

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Q: A water jet that leaves a nozzle at 53.24 m/s at a flow rate of 117.37 kg/s is to be used to…

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Q: The static and stagnation pressures of a fluid in a pipe are measured by a piezometer and a pitot…

A: Given: The static pressure of a fluid in a pipe is P1=200 kPa. The stagnation pressure of a fluid in…

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A:

Q: A centrifugal pump impeller nas an iniet radius oT 15 cm and a blade width of 6.3 cm. Its radius at…

A: Centrifugal Pump In Centrifugal pump kinetic energy of rotating impeller is imparted on the liquid…

Q: Approximate the theoretical power in wind moving at a speed of 6 m/s with an air temperature of 40°F…

A:

Q: A pump rated at 700W is used to transfer water from an open tank at ground level, to another open…

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Q: A fireboat is to fight fires at coastal areas by drawing seawater with a density of 1030 kg/m^3…

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Q: Consider a turbojet powered airplane flying at a standard altitude of 8.5 km at a velocity of 108…

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Q: A pump is used to increase the pressure of water from 100 kPa to 900 kPa at a rate of 160 L/min. If…

A: given:p1=100kpap2=900kpaQ=160l/minP=3KWefficiency of the pump η