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two equal sections made of steeland iron (relative permeability 1500 and 500, respectively) withcross-sectional area of 1 cm x 1 cm and H = 6 cm, W = 4 cm (seeFigure 1). The iron section was attached to the ceiling while the steel section was placed on a horizontal support so that 1-mm airgaps were left between the sections. The mass density of steel is7.8 g/cm3. The students consider triggering therelay using a coil (200 turns, resistance 5 Ω) energized by abattery.What is thetotal reluctance of the steel and iron sections?What is the magnitude of the magnetic field density that needs tobe established in the gap?What is the magnitude of the magnetic flux that needs to beestablished in the steel section of the relay? What is the required voltage of the battery?
The following specification s are given for fours different temperature sensors. If the application requires a temperature variation of -50°C to 120°C and the measured value is -20°C, select the best sensor.
2) Draw the logic circuit for each of the following. For each gate, determine EVEN or ODD parity and find the output for the given input data: a) 4-input XOR, input data=1001 b) 5-input XOR, input data-10010 c) 6-input XOR, input data=101001 d) 7-..
A wire of diameter 1 mm and conductivity 5*10^7 S/m has 10^29 electrons / m^3 when an electron field of 10 mV / m is applied. Determine charge density of free electrons, current density, and current in the wire.
Determine the temperature in the middle of the bar and evaluate it at t = 1, 2, 3, 10, 50 sec. First guess, and then calculate. Also, plot the temperature expression vs. time from t = 1 to 50 sec using Excel
A charged 100- picoFarad capacitor has initial voltage across it of 10 V. A 100 kohm resistor is suddenly connected across the capacitor (at t=0) to discharge it. What is the magnitude of the instantaneous current at 20 usec
When one push button is pushed, the selected soda is dispensed and the machine returns to its initial state. One other feature is that an LED comes on to warn the user that two quarters are not available for change, so if a second $1 bill is inser..
Find the electric field intensity at (0,0,75000) produced by 50,000 0.1 C charges along the x-axis spaced at 1 meter apart starting at (1,0,0) and 50,000 0.2 C chargers along the y-axis spaced at 1 meter apart starting at (0,1,0).
Suppose a radio frequency signal is sampled at fs = 500 MHz. What frequency bands from 250 MHz to 1000 MHz will alias into the FM band, 88-108 MHz
Assume that the cruise control system of an automobile analyzes the speed and the acceleration of the vehicle to operate. To transmit this information to the cruise control unit, an analog computer unit is required.
Design a network realization of the transfer function below. Show the location of Ii and where the outputVo is taken. Also label all of the network element values. Vo / Ii = H s /(s+2)(s+4)
A 220 V shunt motor has armature and field resistance of 0.2-ohm and 220-ohm respectively. The motor is driving a constant load torque and running at 1000 rpm drawing 10 A current from the supply.
A temperature sensor has a static transfer function of 0.15mV/C and a time constant of 3.3s. If a step change of 22 degrees to 50 degrees C is applied at t=0, find the output voltages at .5s, 2.0s, 3.3s, and 9s. What is the indicated temperature a..
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