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1. Consider the amplifier between stations B and C of the temperature measurement system shown in below. [a] Determine the minimum input impedance of the amplifier (in Ω) required to keep the amplifier's voltage measurement loading error, ev, less than 1 mV for the case when the bridge's output impedance equals 30 Ω and it's output voltage equals 0.2 V. [b] Based upon your answer in part [a], if an operational an1plifier were used, would it satisfy the requirement of ev < 1 mV (Hint: Compare the input impedance obtained in part [a] to that of a typical operational amplifier)? Answer yes or no and explain why or why not. [c] What would be the gain, G, required to have the amplifier's output equal to 9 V when T = 72 F?
2. An engineer is tasked with the job of specifying several components of a temperature measurement system. The output voltages from a Type J thermocouple referenced to 0 °C vary linearly from 2.585 to 3.649 mV over the temperature range from 50 to 70 °C. The thermocouple output is to be connected directly to an A/D converter having a range from -5 to +5 V. For both a 12 bit and a 16 bit A/D converter determine [a] the quantization error (in mV), [b] the percentage error at T =50 °C, and [c] the percentage error at T = 70 °C. Now if an amplifier is installed in between the thermocouple and the A/D converter, determine [d] the amplifier's gain to yield a quantization error of 5% or less.
3. Determine the simplified Boolean expression for X in the logic circuit below. Also, complete the timing diagram.
4. Design a passive lowpass filter for a sensor that has a cutoff frequency of 100 Hz. The filter should have a magnitude ratio of at least 0.95 at 50 Hz and not more than 0.01 at 200 Hz. The resistance of the sensor is 10 ohms. You will need to specify the number of even stages and the values for the components. Plot the magnitude ratio of the resulting filter out to 500 Hz
a particle travels along a straight line such that in 2 s it moves from an initial position sa 0.5m to a position sb
Water at 24 degree C flows at 0.8 m/s in a smooth, 1.5 cm I.D. tube that is kept at 27 degree C. The system is extremely clean and quiet, and the flow stays laminar until a noisy air compressor is turned on in the laboratory. Then it suddenly goes tu..
a 25 mm diameter uniform steel shaft is 600 mm long between bearings.a find the lowest critical speed of the shaftb if
Define the decision variables and write out an optimization problem. Give the complete formulation explicitly stating objective function, all constraints and parameter values. Use Excel program to solve the formulated optimization problem. Show ev..
A mild structural steel beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam.
A single crystal wire of iron at room temperature is subjected to a tensile stress along [010]. Calculate the resolved shear stress in the (110) plane, along the [-111] direction, if the applied stress is 7500 psi.
a machine of total mass 100 kg is mounted on a suspension which has a static deflection under the weight of the machine
A 680 liter oxygen tank is filled to the pressure of 13.7 Mpa, and used to help a respiratory patient in a room with a temperature of 20 degrees C. During one treatment, 135 Liters of oxygen is supplied from the tank to the patient. The tank is then ..
Your company is considering creating an alumina coating by immersing an Fe-Si alloy into an Al melt, withdrawing the coated Fe-Si, and then oxidizing the Al coated alloy at 1000°C in air to form an alumina coating.
Maximum efficiency of the heat exchanger to be able to realise the highest possible fuel economy improvement3. Durability of 150,000km (legal requirement for emission relevant components)
steam at 10 mpa and 450 degrees c enters an adiabatic turbine at 80 ms and exits at 10 kpa 92 quality and 50 ms. the
a light inelastic string of length 1.5m fixed at one end carries a particle p of mass 4 kg at the other end. if the
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