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A hydroelectric dam has a penstock that discharges 105 kg/s of water. The head of the dam is 80 m.
a. Compute the volume of the discharged water per second (flow rate).
b. Compute the power of the water entering the turbine.
c. Assume that hydro efficiency is 0.95, the turbine efficiency is 0.9 and the generator efficiency is 92%, estimate the generated electrical power.
Ziegler-Nichols Open Loop Tuning Often, when working with a faster loop, many people will opt only for a PI control philosophy
A piston-cylinder device contains carbon dioxide CO2 (molar mass = 46 g/mol) as shown in the figure. The cross-section area of the piston is 0.25 m2 and the initial cylinder height is 50 cm. CO2 is initially at 40 bar and 500 oC (state 1).
When fed from a signal source with a peak amplitude of 0.1v and a source resistance of 20k , the peak amplitude v(pi)is 5mv. specify Re and bias current Ic. The BJT has beta =100. If the total resistance in the collector is 5 k,
How much hydrogen would be needed to give the car a range of 300 miles if the source of electricity is an on-board fuel cell with an efficiency that is 50% of the ideal?
Perform experiments using your circuit design. Using your digital scope, plot (and submit) input voltage and output voltage from your circuit design. Try to vary the filter portion (R, L, C) of your circuit and plot (and submit) output voltages.
A 2-input NOR gate has inputs A and B. If the output of the gate remains LOW independent of the state of input A, what can be deduced about B
Semiconductors and Diode Theory
A single phase two winding transformer having rating: 20 KVA,480/120 V, 60 Hz A source connected to the 480 V winding supplies an impedance load connected to 120 V winding. The load absorbs 15 KVA at 0.8 pf lagging when load voltage is118 V.
A single-phase circuit is placed across a 120-V rm, 60-Hz source, with an ammeter, a voltmeter, and a wattmeter connected. The instrucments indicate 12 A, 120 V, and 800 W, resppectively. Find (a) the power factor, (b) the phase angle
An AC motor with impedance Z = 4.2 + j3.6 O is supplied by a 220 V, 60 Hz source. Determine the time average power delivered to the load.
1. Determine the capacitance for a capacitorif its impedance is 5000 ohms at 400 radians/second. 2.Calculate the frequency that will cause a100mH inductor to have an impedance of 15,708 ohms.
On any given day, the price of stock XX can do one of three things: jump very high, fall very low, or stay reasonably close to its opening value. You are trying to use Bayes' Law to determine if stock XX is being bought or sold by shareholders
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