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A 1.2 MW wind turbine has a rotor diameter of 64 m. the turbine operates in an area with an average wind velocity of 7.5 m/s and the air density of 1.18 kg/m^3. the turbine power coefficient including the unit efficiency is 42.8 percent. (a) Determine the power output and the annual energy produce (b) the total installed cost is $1.2 million, and its annual cost is based on the equivalent of a 20-year, 5percent loan to cover the capital cost. the annual Debit payment (DP) is determined from DP=CRF x Total installed cost. The CRF is Capital Recovery Factor evaluated from CRF = (i(i+1)^n/(1+i)^n-1, where i is the interest rate in decimal form, and n is number of years. if the annual operation and maintenance cost 1 percent of the capital cost, determine the cost of electricity in cent/kWh.
How many turns are required for a circular loop of 100-mm radius to develop a peak emf of 10mV if the loop rotates 30r/s in the earth's magnetic field Take B = 60E-6T.
Assume you buy a 1 kOhm resistor with +/- 20% tolerance in its value. You would like this resistor to consume at most 2 W of power, otherwise it might burn. What is the highest power supply in V you would use to power it
Mrs. Brooke owns a robot with an FSM brain. The robot walks from left to right along a paper type containing a sequence of 1's and 0's. On each clock cycle, the robot walks to the next bit.
A rectangular chip has a top surface of 0.5 cm by 2 cm cooled by air at 20 oC with h = 150 W/m2.K. There are also 16 connector pins, 1 mm wide, 0.5 mm thick, 6 mm long and k = 60 W/m.K attached to a circuit board at 30 oC.
A 12V-DC power supply that gets it's power from the 110V (RMS) wall outlet needs a transformer as a first step in generating its output. The rectification and regulation stage of the power supply needs an input voltage of 15V (peak)
The load on a 460-V, 60-Hz, Y-connected, balance three-phase source consists of three equal Y-connected impedances of 100+j100 ohms, and three equal Delta-connected impedances of 300-j300 ohms. Compute the line current, power, and power factor for..
The loop transfer function of a single-loop negative feedback system is: L(s) = Gc(s)G(s) = K(s + 2.5)(s + 3.2) / (s2(s + 1)(s + 10)(s + 30)) This system is called conditionally stable because it is stable only for a range of the gain K
Calculate the S/N ratio for a receiver output of 4 V signal and 0.48 V noise both as a ratio and in decibel form. (69.44, 18.42dB)
c) Write the SOP boolean equations as obtained directly from the partial truth table above and sketch a logic circuit diagram for them. d) Reduce the above equations step-by-step into the simplest form that would use only NAND gates.
Two balanced Y-connected loads in parallel, one drawing 15 kW at 0.6 power factor lagging and the other drawing 10 kVA at 0.8 power factor leading, are supplied by a balanced, three-phase, 480-volt source.
A composite has a cross-sectional area of 320 mm2 and is subjected to a longitudinal load of 44,500 N. The continuous and aligned fiber-reinforced composite is to be produced consisting of 30 vol% aramid fibers and 70 vol% polycarbonate matrix.
A cylindrical conductor of radius b is solid, except for a hole of radius a, bored down the z axis. Uniform current I flows in the positive z direction. a) Using Ampere's circuital law, find the magnetic field strength
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