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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?
A tank containing 6000L of water drains out in 30 min. The volume Vof water in the tank after t min of draining isV=6000(1-t/30)2. Find the instantaneous time rate of change of V after 15 min draining.
Discuss the properties and practical applications of the following electrical engineering materials : (a)Carbon and graphite (b) copper
A 74x163 counter is hooked up with inputs ENP, ENT, and D always HIGH, inputs A, B, and C always LOW, input LD_L = (QA.QC)', and input CLR_L = (QB.QD)'. The CLK input is hooked up to a free-running clock signal.
Steam enters a reversible, adiabatic (isentropic) turbine at 8 MPa and 550 oC with a mass flow rate of 3.6 kg/sec. The pressure of the steam flow at the turbine exit is 250 kPa. Neglect the changes in potential and kinetic energies of the flow thr..
Twenty voice signals are to be multiplexed and transmitted over twisted pair. What is the bandwidth required (in bps) if synchronous time division multiplexing is used
Design a length-5 FIR bandpass filter with an antisymmetric impulse response h[n], i.e.., h[n]= -h[4-n], where (0 less tahn or qual n and 4 is bigger than or equal n), satisfy the following magnitude response values.
For a transformer with a line voltage of 34.5 KV on the primary and a line voltafe of 480V. Calculate Vphase primary and secondary,P,Q, and S for each of the following transformer connections and loads.
design a digital lock. The lock will have four buttons for you to enter a secret three-digit code to unlock it. You will use the pushbuttons RON(3:0) on the FPGA board for this - RON(0) will represent the digit ‘0', RON(1) the digit ‘1', RON(2) th..
A 50 (ohm) lossless transmission line is terminated in a load with impedance Z= (30-j50) ohm. the wavelength is 8cm. Determine: (a) reflection coefficient (solved: 0.1 - j0.56 or 0.56 angle -79.9)
A charged particle starts from rest at the origin of coordinates in a region where there is a uniform electric field E parallel to the x-axis, and a uniform magnetic flux density B parallel to the z-axis. Show that the coordinates of the particle ..
Explain the difference between hard-decision and soft-decision decoding in partial response signaling, including the relative advantages and disadvantages of each.
A six pole,60 Hz synchronous motor is connected to an infinit bus of 15 KV through a transmission line.The synchronous reactance of the motor is 5 ohm ,and the inductive reactive reactance of the transmission line is 2 ohm
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