Engineering, 13.03.2020 22:14 brose0707
: You are working with a temperature sensor which produces a change in output voltage as temperature is increased. Between 0 – 50°C, the output voltage changes linearly from 0.2 – 0.7 V. You will amplify this voltage and adjust the offset using a linear signal conditioning circuit (a dc coupled amplifier), and connect its output to an 8-bit ADC with input range of 0 to 5V. (a) [8 points] If you preserve the entire 0 – 50°C range, what is the resolution of this system? What should the input/output relation be for the signal conditioning circuit so that the SQNR is maximized? (b) [7 points] If you require 0.01°C resolution at the ADC, you will need to sacrifice the range. If you want the ADC’s input voltage to be 2.5 V at 40°C, and a resolution of 0.01°C, what should the input/output relation be for the signal conditioning circuit? What is the range of the temperature?
Answers: 2
Engineering, 03.07.2019 14:10
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 04.07.2019 18:10
The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length
Answers: 2
Engineering, 04.07.2019 18:10
Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?
Answers: 3
Engineering, 04.07.2019 19:10
The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object
Answers: 1
: You are working with a temperature sensor which produces a change in output voltage as temperature...
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