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single phase motor draws 20A from a 200V, 50Hz supply with a lagging power factor of 0.8. Calculate the value of the capacitance needed to bring the current in phase with the voltage.
Important information about Electrical Networks, Engine consumes 5kw of power and a reactive power of 2kvar at current of (3+j2) Amps.
Charges +Q and +3Q are seperated by a distance 2m. A third charge is located such that the electrostatic system is in equilibrium. Find the location and the value of the third charger in terms of Q.
Convert function H(A, B, C) = (AB + C)(AC + B) into both the sum-of-products and product-of-sums forms. Obtain the truth table and express the function in both canonical forms: sum-of-minterms and product-of-Maxterms.
Suppose a signal is sampled at 1 kHz and you compute the DFT of the signal using 1000 signal samples. What frequency in Hz corresponds to the 150th value of the DFT
1.Calculate motor speed in revolutions per minute for an eight-pole,50Hz motor. Give the equation and identify its parts; show your math. 2.You need to detect finished products coming down an assembly line.
1. Determine Laplace transform of (2-2e^-4t)u(t) 2. Determine if x(t) = 9cos(2t)+4sin(pi t) is periodic; if periodic, calculate the period. 3. Compute the inverse Laplace transform of X(s)= (s+2)/(s^2+ 7s + 12).
A voltage divider has a 5 V source and two 150 kilo ohm resistors. What is the voltage across(a) an ideal voltmeter (b) a voltmeter with an input resistance of 10 mega ohms
Find the transformation ratio of a transformer having 350 turns on the secondary winding and 7000 turns on the primary. What voltage must be applied to the primary of the transformer to develop an open-circuit secondary voltage
A GaAs device is dopeed with a donor concentration of 3*10^15 cm^-3, For the device to operate properly, the intrinsic carrier cconcentration must remain less than 5 percent of the total electron concentration.
A. find the sixtieth percentile B. Find the seventy fifth percentile C. Determine the number of data points that fall between the sixieth and seventy fifth percentiles you found in parts A. and B.
a. Plot the spectra of X(w) = t sinc(wt/2). Let t = 1 and -20 =
Write an optimal sequence of control microinstruction
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