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Consider the design of a home-built wind turbine using a 350-W automobile dc generator. The goal is to deliver 70kWh in a 30-daymonth.
a. What capacity would be needed for the machine?
b. If the average wind speed is 5 m/s, and Rayleighstatistics apply, what should the rotor diameter be if thecorrelation of (6.65) is used?c. How fast wouldthe wind have to blow to cause the turbine to put out its full 0.35kW if the machine is 20% efficient at thatpoint?d. If the tip-speed-ratio isassumed to be 4, what gear ratio would be needed to match the rotorspeed to the generator if the generator needs to turn at 1000 rpmto deliver its rated 350 W?
The silicon cube you were shown consisted of 4x4x4 unit cells. You were shown one dopant in the silicon cube. Given that the lattice constant of silicon is 0.543 nm. Calculate the dopant density represented by the 4x4x4 silicon cube simulation.
Determine the corona lossof a three phase, 220kV, 50 Hz and 200km long transmission line of three conductors each of radius 1 cm and spaced 5m apart inequilateral triangle formation. The air temperature is300C and the atmospheric pressure is 760mm..
A 1500 hp phase ac motor load has a power factor of 0.7. What capacitor (in Farads) is required to correct the power factor to 0.90 if the line voltage is 2400 volts The capacitor bank is to be delta connected.
c) Find the output y(t) in response to the input x(t) = 6 u(t), where u(t) is the unit step function. d) Find the output y(t) in response to the input x(t) = δ(t) A linear system has the system response function H(s)= -7/(s+4)
A piston-cylinder device initially contains 1 m of nitrogen gas at 400kpa and 27 c. A resistance heater is turned on inside the cylinder which passes 70 kj of electricity to the nitrogen gas.
Important information about System Analysis and Design, Elmwood College Situation: The school is considering a new system that will speed up the registration process.
A labor intensive process has a fixed cost of $338,000 and a variable cost of $143 per unit. A capital intensive (automated) process for the same product has a fixed cost of $1,244,000 and a variable cost of $92.50 per unit.
Assuming that there is no frequency-dependent component of the load (i.e., D = 0), find the steady-state frequency deviation and the corresponding new generation of each unit. Use 1000 MVA as the p. u. (per-unit) base.
A load consists of a resistance R in parallel with a capacitor of reactance X. The load is fed from a single phase supply through a line of impedance 8.4 + j11.2 ohms. The rms voltage at the load terminal is 1200 at 0 degress V rms,
Discuss the sequential nature of the Ripple Carry Output Adder. Why is it actually a sequential operation What are problems associated with this type of sequential design? How would you alleviate them
Design a combinational circuit that compares two 4-bit unsigned numbers A and B to see whether B is greater than A. The circuit has one output X, so that X = 1 if A = B.
The resistance of a copper wire at 30oCis 50Ω. if the temperature coefficient of copperat 0oC is 0.00427, what is the resistance at100oC
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