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A 240-V, 900-rpm, dc series motor takes 25 A at full load. The armature and field-winding resistances are 0.2 ohm and 0.3 ohm, respectively. The rotational loss is 300 W. Calculate (a) the power developed, (b) the power output, (c) the available torque, (d) the copper loss, and (e) the efficiency. If the pulley diameter is 20 cm, what is the force exerted by the motor at the rim of the pulley?
Design an IIR BAND STOP Butterworth filter with the following characteristic
Three identical point charges of 4 picoC each are located at the corners of an equilateral triangle 0.5 mm on a side in free space. How much work must be done to move one charge to a point equidistant from the other two and on the line joining the..
Using combination of deposited oxide and polysilicon films, create a mask set and process flow that will produce a wheel that can rotate freely about a hub that extends over the top of the wheel.
A 3 phase Y connected alternator is rated at 1600 KVA, 13500 V. The armature resistance and synchronous reactance are 1.5 ohms and 30 ohms respectively. Calculate the % voltage regulation for a load of 1280 KW at 0.8 leading power factor.
A DC power supply is adjusted to give a no load output voltage of 15 volts with the AC line voltage of 115 volts rms. A full load current of 1A is drawn into the circuit and the output voltage drops to 14.89 volts.
The Fourier transforms of odd and even functions are very important. The reason is that they are computationally simpler than the Fourier transform. Let x(t) = e-ItI and y(t) = e-tu(t) - etu(-t). a. Plot x(t) and y(t), and determine whether they ar..
suppose the conductor arrangement of a power line under planning shown below. the line will connect the hydroelectric
Calculate the expected voltage and current in the branches of sample electric circuits and estimate the error propagation using resistor nominal values and associated tolerances.
We have an amplifier with a 1 MHz bandwidth and a 20 mV input signal. The input noise = 1 mV, output signal 6.0 mV, and output noise = 1 mV. Find: (a) SNR at the input (b) ..
a sample of 0 385 gram of cus was formed by heating a mixture containing 0.318 gram of copper and 1.00 gram of sulfure according to the reaction , Cu + S ---> CuS. A) is copper or sulfer the limiting reactant B) calculate the theoretical and the pe..
A Universal Serial Bus (USB)communication link requires a circuit that produces the sequence00000001. You are to design a synchronous sequential circuit thatstarts producing this sequence for input E=1. Once thesequence starts, it completes.
An ideal PEM fuel cell with an cadency of 83% needs 30.35g of hydrogen to generate IkWh. For a real cell with half that efficiency, how much hydrogen per day woad be needed to power a house that uses 25kWh per day?
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