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1. A temperature sensor transfer function is 44.5 mV/C. The output voltage is measured at 8.86 V on a 3-digit voltmeter. What can you say about the value of the temperature?
2. A photocell with a 35-ms time constant is used to measure light flashes. How long after a sudden dark-to-light flash before the cell output is 80% of the final value?
A liquid level system converts a 4-10 m level into a 4-20mA current. Design a three mode controller (PID im assuming) that outputs 0-5 volts with 50% PB, 0.03 min integration time, and 0.05 min derivative time.
(a) find the value of a and K so that the relative damping ratio of the system is 0.5 and the rise time step response is approximately 1 s. (b) with the values of a and k found in previous question
give a circuit complete with component values for a weighted sum- mer that shifts the dc level of a sine-wave signal
1.In a certain transformer, the input powr to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues?
How to mitigate effects of very fast transients (VFT) on HV equipment ?
A 6-pole, wave-connected dc armature has 300 conductors and runs at 1200 rpm. The emf generated is 600 V. Find the useful flux/pole.
In Voltaire's tale, Candide travels across the known world witnessing the horrific brutalities that humans commit against one another in the name of religion, power, or simple greed. Having witnessed and experienced this violence, which puts into dou..
A sample of silicon contains 1x10^18/cm^3 donors. Below what temperature does it cease to show intrinsic properties if the band gap is 1.12ev and the intrinsic carrier concentration is 2x10^16/cm^3 at 300K
A photoresistor is connected series to a battery of 10 V with internal resistance of 5 Ohms. The ohmic resistance of the photoresistor changes by time through the day and expressed as: RLDR=20-(10/t) .
Calculate the values for the Thevenin Equivalent Circuit, ZTH and VTH.Be sure to include both magnitude and phase values in your solution.Assume that the load will be placed where RL is located for your analysis.
Suppose an engineer is designing an external PCB board with an abnormally large number of programmable devices and is unsure of which protocol to choose for his hardware (DAC s, ADCs,PGAs, and Digital POTS/Trimmers)
Determine experimentally the value of a resistor that when placed across the battery will make a measurable change in measured battery voltage. Keep the voltage decrease from open circuit value to 10% or less.
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