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A thin-walled beam of uniform thickness has the cross section shown. Determine the dimension b for which the shear center O of the cross section is located at the point indicated.
A 440 Vrms (line to line voltage) three phase induction motor runs at 1150 rpm driving a load requiring 15Nm of torque. The line current is 3.4 at a power factor of 80% lagging. Find the input power in Kw, The output power in Kw, and the efficiency..
A sequential circuit for a luggage lock has 10 push buttons labeled0,1,2,3,4,5,6,7,8,9. Each pushbutton 0 through 9 produces a 1on X_i, i=0 through 9 with all other values on variable X_ j, jdoes not equal i, equal to 0.
A capacitor is used in the electronic flash unit of a camera. A small battery with a constant voltage of 6 V is used to charge the capacitor with a constant current of 10 microamperes. How long does it take to charge the capacitor
Desired D.C. Output : 10 V Load Variation: 0.3 kilo-ohms - 10 kilo-ohms Ripple Factor: Less than 0.1% for 2 kilo-ohms load Load Regulation: Better than 3 mV for a 1 mA change in load current
Design a 3-element, -40 dB side lobe level Dolph-Tschebyscheff array of isotropic elements placed symmetrically along the z-axis. Find the (a) amplitude excitation coefficients (b) array factor
Define X and Y to be two discrete random variables whose joint probability mass function is given as follows: P(X = m, Y = n) = e^7*4^m*3^n?m / m!(n m)! , for m = 0, 1, . . . , n and n = 0, 1, 2, . . . , while P(X = m, Y = n) = 0
Consider a 75kVA, 7500/480V, 60 Hz distribution transformer and following test data: O/C Test (on Primary) - VOC = 7500V, IOC = 0.35 A, POC = 473 W and S/C Test (on Primary) - VSC = 499V, ISC = 10A and PSC = 1050 W. Determine the following:
A separately excited DC generator,when running at 1200 RPM, supplies 200A at 125V to a circuit ofconstant resistance. What will the current be when the speed is reduced to 1000 RPM if the field current remains unchanged
What is the applied voltage? What is the resulting frequency of the waveform? What is the corresponding rotor shaft speed? Verify that the simple motor rotates, and note how much voltage is needed to turn the motor.
consider a sinusoidal wave with frequency of 300khz as a carrier signal. we want to transmit a sinusoidal signal with
Consider a path with discrete points A,B,C,D and E. It takes 2 pJto move an electron from A to B or from B to C. It takes 3 pJto move a proton from C to D. It takes no energy to move an electron from D to E.
1 you will create a data set consists of the total data number elements. for example if your total data number is 127
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