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You are given a black box, a 6 k Ohm resistor, a 40 nF capacitor, a voltmeter, and an ammeter. With these supplies you complete the following measurements at 950 Hz:
You place the resistor and capacitor in series and measure a current flowing from the black box of 2.2 mA rms with a phase angle of 55 degrees.
You place the resistor and capacitor in parallel and measure a voltage across the terminals of the black box of 15.1 V rms with a phase angle of 9.8 degrees.
You place the ammeter in series with the black box and measure a current flowing from the black box of 14 mA rms with a phase angle of 15 degree.
A temperature sensor has a static transfer function of 0.15 mV/C° and a time constant of 3.3 s. If a step change of 22° to 50° C is applied at t=0, find the output voltage at 0.5 s from t=0s to t=10s
Each start/stop station contains one NO start pushbutton and one NC stop pushbutton.
Determine a suitable sampling frequency. Design a notch filter to remove the 50Hz component, paying particular attention to any assumptions you have made in the design.
Two points are given in Cartesian coordinates as P1 (0,0,1) and P2 (2,1,,3). vector A connects p1 (tail) to p2 [head). Find the unit vector in the direction of A in spherical and cylindrical coordinates.
Consider a 32-bit data bus in a chip. Assume each bit has P0 = 0.2 and P1 = 1 P0 = 0.8 and all the 32 bits are statistically independent from each other. Estimate the power saving when we use the bit-invert technique.
What value of emitter resistor would you choose, if: a) You have to amplify the signal of a microphone that has an internal resistance of 100K using a Common Emitter bias configuration b) you have to drive a load of 50 with an Emitter Follower cir..
A digital system has a clock generator that produces pulses at a frequency of 16 MHz. Design a circuit (draw the logic diagram) that provides a clock with a cycle time of 250 ns.
An AC synchronous motor operates at 1200 rpm on a 60 hz, 240 Vrms supply. The supply is changed to 50 hz, 240 Vrms, What is the mechanical rotational velocity when the motor reaches steady state
A three 480V system is connected to a balanced three-phase load. The line current I_a is 10A and is in phase with the line-to-line voltage V_bc. Calculate the impedanceof the load for the following a) If the load is wye-connected
Suppose a 12-V battery bank rated at 200 Ah under standard conditions needs to deliver 600 Wh over a 12-h period each day. If they operate at -10 Celsius, how many days of use would they be able to supply
A function f has four inputs a,b,c,d and one output such that the output is a 1 if and only if the number of 1s in the inputs is even. (a) Derive the truth table for f. (b) Write the canonical sum-of-products expression for f.
An amplifier has a gain of 10 and follow a bandpass filter filter where the loss in the in the center of the bandpass is 0.05. What is the combined gain/loss of the two cascaded blocks at the center frequency of the filter
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