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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
Consider a Refrigerant 22 at 0 C that is going through a phase change from the saturated liquid to saturated vapor. Using T-dS equations, calculate the entropy change between these two phases. Please show the equations and solution.
calculate: a) the overall train value. b) the output rational speed at shaft 5. c) the output torque at shaft 5. Relevant gear data is= NA= 17, NB= 36, NC= 19, ND= 41, worm E = double lead, worm G = triple lead, NH= 37?
Benzene, p= 54 lb/ft^3 at 100 F is pumped at a rate of 40 gpm. The reservoir is open to atmosphere and below the pump centreline by 4 ft. The discharge line is 10 ft above the pump centreline. The gage at discharge reads 50 psig. The discharge line i..
Superheated steam at 400°C and saturated water with a quality of 40% enter a mixing chamber at a pressure of 100 kPa. What is the required ratio of mass flow rate of superheated steam to mass flow rater of saturated water if at the exit to the mixin..
in a refrigerator cycle r-12 enters an evaporator as saturated liquid at 100.4 kpa. it exits with a negligible pressure
a hydraulic motor has a displacement of 130 cm3 and operates with a pressure of 105 bars and a speed of 2000 rpm. if
in a mild steel block a flat surface of length 100 mm and width 60 mm has to be finished in a shaping machine in a
Collar C moves along rod BA with a velocity of 3 m/s and an acceleration of .5 m/s^2 both directed from B towards A and measured relative to the the rod. At the same instant, rod AB rotates with the angular velocity and angular acceleration shown. De..
explain what the equation of motion will become if you have three particles - the first two are sticky and the third
calculate the vertical displacement at D and the horizontal displacement at Free-Body Diagram should be recalculated with P and Q.
a building for which the heat transfer rate through the walls and roof is 1350 btuh per degree temperature difference
Consider a model of a building whose base moves as a result of an earthquake. The building can be modeled as a single-degree-of-freedom spring-mass system where the building mass is lumped on top of two beams used to model the walls of the building. ..
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