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1. Design an interface for a ±24 V, 500 mA geared DC motor. The time constant of the motor is 10 ms. Include software to adjust the delivered power from 0 to 100%.
2. An alarm is powered by 120 VAC, and the on/off state of the alarm is controlled by an EM relay. Design the interface between a computer output port and the EM relay. The dropout voltage is 3.5 V, and the coil current needs at least 100 mA. Limit the coil voltage to 6 V. Write three software functions: Alarm_Init, Alarm_On, and Alarm_Off.
Consider the RLC series circuit with a 544 ? resistor, a 773 mH inductor (with negligible resistance) and a 810 nF capacitor in series, What is the peak voltage across the capacitor at this frequency
a company produces two products that are processed on two assembly lines. assembly line 1 has 100 available hours and assembly line 2 has 42 available hours.
How many moles of oxygen molecules would be needed to react with 111.2 grams of iron? How many grams of rust would result from this reaction
A standing wave on a 1.70 m long horizontal string displays three loops when the string vibrates at 125 Hz. What is the function describing the standing wave
Find the electric potential at point (0,0,z) resulting from a surface charge density ps existing on the z=0 plane from p = a to p = b. Assume V = 0 at an infinite point distance from the origin.
You are the project manager on an upcoming project. You and the contract administrator are preparing for contract negotiations with two potential sellers. Why is determining who has authority an important activity in conducting a negotiation?
What are some sources of risk in a systems analysis and design project, and how does a project manager cope with risk during the stages of project management?
Identify the macro sovereign risks and problems and their potential effect on QN's competitive advantage (in fact QN has not established what its competitive advantage really is, though it has been very successful in the UK and the euro area).
What criteria would be appropriate to select and compare among competing bidders for custom development of an application? Define each of these criteria.
For the three transistor configurations namely, the common-eitter, the common-collector, and the common-base, compare the voltage gain and the current gain for each configuration.
The probability that a person will install a black telephone in a residence is estimated to be 0.3. Find the probability that the tenth phone installed in a new subdivision is the fifth black phone.
Assuming that only integer multiples of a unit bipolar transistor having IS = 3 x 10-16A can be placed in parallel, and only a single voltage source, VB, is available (Fig. 4.54), construct the required circuit with minimum number of unit transist..
a) What current will flow in the diode if the forward voltage bias is raised to 0.8V b) What current will flow in the diode if the forward voltage bias is lowered to 0.6V c) What change in forward bias voltage will increase the diode current by a ..
Rain affects the downlink from the satellite and the overall CNR ratio in the receiver falls by 6.0 dB to 13.0 dB. What is the bit error rate and the time between errors now?
A 100V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.25 ohm. The motor runs at a speed of 600 rev/min when the shaft torque is 27.14 Nm. Friction and windage losses at this speed are 300W.
Two data streams are coming serially to a system. These two streams are carefully observed and if considering any three bits from each stream, we observe that these two input streams are equal ; the FSM gives a signal to an alarm system.
Write a control algoirthm for a temperature control loop for a heat echanger (steam to hot water) employing a temperature control valve, controller, and thermostat. In your algorithm include a step change and ramp change.
Use PSPICE to generate the ideal current-voltage characteristics of a diode from a reverse-bias voltage of 5 V to a forward-bias current of 1 mA, for an IS parameter value of (a) 10 15 A and (b) 10 13 A. Use the default values for all other parame..
1) Two signals are said to be orthogonal if the integral of the product of the signals is 0 over one period of the new (multiplied) signal. Assume x(t) and y(t) are orthogonal energy signals with energy, Ex and Ey, respectively.
Write a simple shell script called mathmagic that takes two arguments in at call time and returns to the stdout the value of the two items entered, the value of the two items added together, the value of the two items subtracted
for the polynomal function P(x) = x^2 / 3 + x^2 - 8x + 1 find all relative extrema, the inflection point, the interval on which P is concave down
A recording trace r(t) is definedas r(t) = s(t) + n(t), where s(t) =10sin(20?t) (i.e., a 10 Hz sine wave, given f= 2f) is the signal and n(t) = sin(120t) (i.e., the 60 Hz electromagnetic noise) the noise.
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