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

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Q: At the ceiling height, can you assume the aircraft has minimal power

A: To explain: At the ceiling height, can you assume the aircraft has minimal power.

Q: n, how much does it cost to run the air per month (30 days)?

A: To find total cost

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Q: A Carnot engine requires 35 kJ/s from the hot source. The engine produces 15 kW of power and the…

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Q: DESCRIBE THE ENERGY ANALYSIS OF STEADY-FLOW SYSTEMS

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Q: PROBLEM 1 A hydroelectric power plant has the hydraulic turbine located 60 m below the elevation of…

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A: Given Could Dr. benjmin be lifted 20 cm above the floor by the thermal energy of the floor…

Q: m = 70 kg/s P₁ = 40 kPa Saturated Liquid Water W = 140 kW 2 Q = 302 MW Boiler 3

A: (a) To find: The boiler pressure. Given: The pressure at the entry of the pump is P1=40 kPa. The…

Q: How can you define impulsive force in terms of momentum.

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Q: Question 57 A jet plane travels in air at pressure of 101.325 kPa and 10°C at a speed of 2000 kph.…

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Q: A wind turbine with an 24000 mm-radius rotor is rotating at 18 rpm under steady winds at an average…

A: Given: r=24000 mm=2.4 mN=18 rpmv=24 km/hrη=28.5%=0.285ρair=1.225 kg/m3

Q: A 100-hp (1 hp = 746 W) car engine has a drive shaft rotating at 2000 RPM. How much torque is on the…

A: Given Data  1hp=746 W N=2000 rpm Power of the engine, P=100 hp Power=746(100)=74600 watt…

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A: Wind Turbine is a device that converts mechanical energy into electrical energy. The kinetic energy…

Q: A wind tunnel is considered to be a steady-state operation, the system receives one hundred fifty…

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Q: What are the energy types in a closed and open system?

A: Given:  Closed and open system  Energy types in closed and open system.

Q: Compute the total work done by a gas system following compression processes as shown below. Express…

A: It is the basic thermodynamics numerical. Used concept is  Work done in various thermodynamic…

Q: A gasoline engine is 30% efficient, which means it can transfer 30% of the energy heat provides the…

A: Given : η = 30% m = 0.8 L/hr since 1 hr = 3600 seconds ∴ m = 0.8/3600  L/sec Pc = 3.5*10⁴ kJ/L…

Q: Water is to be pumped from the bottom of a well 20 ft deep with a specific heat of 1 BTU/lbm F is…

A: Calculate the mass flow rate of water. m˙gh=Wm˙9.8120 ft×0.3048 m1 ft=1 hp=746 Wm˙=12.47…

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A: It is basic numerical of mechanics. Change in kinetic energy = (1/2)*m(V12-V22) Change in potential…

Q: uces 10 kW indicated power & mechanical efficiency is 80%. The  friction power is

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Q: A0.2-kg rocket is launched from rest and rises 29 m above its starting point. In the process, 425 J…

A: Given     Mass, m = 0.2 kg   Height , h = 29 m

Q: Determine the power produced by this turbine in kW.

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Q: 1 kg of ice from a freezer at -10◦C is placed in a bucket in the garden where the temperature is…

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Q: A truck hauls a trailer at 60 km/hour when exerting a steady pull of 600 N. If the work is done for…

A: Given, Velocity generated by force = V = 60 km/hr = 16.67 m/s Applied pull force = F = 600 N Time of…

Q: One pound of air per second with an initial temperature of 180 °F is allowed to expand without flow…

A: Calculate the given mass flow rate of air in kg/s. m˙=1 lbm/s   =1 lbm/s0.4536 kg1 lbm   =0.4536…