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A series-connected dc motor is designed to operate with a variable load. The resistances RA and RF are negligible. To attain high efficiency, the motor has been designed to have very small rotational losses. For a load torque of 100 Nm, the machine runs at its maximum rated speed of 1200 rpm.
a. Find the speed for a load torque of 300 Nm.
b. What is the no-load speed? What are the potential consequences of having the load become disconnected from the motor without disconnecting the dc source?
A 500 Hz square wave is applied to theCK input of a T flip-flop with T held high. (a) Draw 6 cycles of the square wave along with thecorresponding flip-flop output. (b) Draw a circuit showing two T flip-flops in tandem andthe waveform of the output o..
a transmitters last stage output impedance is 50 ohms. the transmitters antennas input impedance is between 30-j50
A voltage source v(t)=t*sin(t) is connected to a capacitor with C= 2 farad. Find the energy stored in the capacitor from t=0 to t=1 second.
Filament 1 is on the left, filament 2 is in the middle, and filament 3 is on the right. Filaments 1 and 2 have currents of 1 A in the ba z direction, and filament 3 has a current of 2 A in the ba z direction
What is the Difference Between Neutral, Ground and Earth?
Given the narrow audio bandwidth of a telephone transmission facility, a nominal SNR of 56DB and a distortion level of
Calculate the inductive reactance per meter of a single-phase, 50-Hz, two-wire transmission line. Assume each conductor's radius is 3cm and the distance between the two conductors is 2m .
A simple voltage divider circuit is used to measure the output of a transducer whose total resistance is 1000 ± 1percent. The internal resistance of voltmeter is 10000 ± 5percent, and the meter is calibrated to read with in ½ % ofthe true voltage ..
A CG amplifier is specified to have Cgs=2pF, Cgd=0.1 pF, CL=2 pF, gm=4 mA/V, Rsig = 1k-ohm, and R'L = 20 k-ohm. Neglecting the effects of ro, find the low-frequency gain vo/vsig, the frequencies of the poles fP1 and fP2
a) Using Shannon's expansion theorem, expand F about the variable d. b) Use expansion in (a) to realize the function using two 3-variable LUTs and a 2-to-1 mux. Specify the LUT inputs. c) Give the truth table for each LUT.
A logic function is given by F=?A,B,C,D,E(3,11,12,19,24,26,27,28,30). Use variable-entered K-map to find a simplified sum-of-product expression for function. Also find the corresponding product-of-sum expression.
design a logic program that will track the activity for one turnstile. there will be three inputs PHASEA, B and RESET. there will be no output. the program should be able to track 999 total guests.
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