The objective of this question is to give the missing information about the reading of thermocouple type J. The temperatures are in degrees Celsius. The temperature is 100 degrees and the reference is 5O. The reading voltage is (mV) Choose... The temperature is 95 and the reference is zero, so the voltage is (mV) Choose... The reference is 30 and the reading voltage is 8.687 mV, The temperature is Choose... + The temperature is 256 degrees and the reference is 75 degrees. The reading voltage is (mV) Choose...

The objective of this question is to give the missing information about the reading of thermocouple type J. The temperatures are in degrees Celsius. The temperature is 100 degrees and the reference is 5O. The reading voltage is (mV) Choose... The temperature is 95 and the reference is zero, so the voltage is (mV) Choose... The reference is 30 and the reading voltage is 8.687 mV, The temperature is Choose... + The temperature is 256 degrees and the reference is 75 degrees. The reading voltage is (mV) Choose...

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2:45 ull 4G A moodle1.du.edu.om 1- A J-Type thermocouple referenced to 80°F has a measured output emf of 2.878 mV. What is the temperature of the measuring junction? 2- Assume that the measured temperature is 250° F, what should be the output voltage if the reference temperature is 90 °F. RK: if the temperature values are not in the table, you have to use interpolation. Response to question 2: The measured output voltage (mV) Select one: O a. 2.764 b. 4.769 c. 5.762 O d. 3.768
A thermocouple is used to measure the temperature T1. The thermocouple reference junction labeled 2 is at a temperature of 20°C. The voltage output is measured using a potentiometer and found to be 4.686 mV. What is T1 in degrees RK: if the temperature values are not in the table, you have to use interpolation. Select one: O a. 98 O b. 118 O c. 105 O d. 108 Previous page Next page
QUESTION 2 ' а) Besides temperature measurement that is based on thermal expansion, there are also thermal sensors that are based on other factors. i. Describe on how the RTD and thermistor measure the temperature and difference between them. ii. Given the temperature for RTD in Figure 1 is 155°C, coefficient of resistance for RTD, a is 0.0035°C'' and resistance for the RTD is 352 at 0°C. The bridge is operated in a balanced condition. Find the value of R1, if R2= R3. R3 R2 G RTD RRTD Ri E, Figure 1 Wheatstone Bridge
antuitive methodology (seize and fox) noting they will be different. olowing cases, find the degrees-of-freedom using KMOGE (Identify L. h. Jz and M) and using the em 3: KMOGE has conditions under which it simply produces the wrong answer. In each of the A. L= Mseize and Fix B L = MKMOGE = Mseize and Fix J = MEMOGE Msetze and Fix
QUESTION 2 Thermocouples are devices used to measure temperature of a given sample or the surrounding medium. These devices feature a "bead", which has a spherical shape, and produces voltage upon change in temperature. For an engineering application at a pharmaceutical company, thermocouple devices are being tested for their responsiveness, i.e. how fast it can detect temperature changes in the environment (surrounding air). The engineers at this company have specified design constraints for an ideal thermocouple: it must detect temperature changes no later than 1.5 minute, and the reported temperature value must be reasonably correct: at most %3 difference between measured and actual temperature values is allowed. Four thermocouples from different vendors are being tested. Relevant properties of these devices are listed below: Thermal conductivity Density 36 W/m*K 36 W/m*K 42 W/m*K 33 W/m*K Specific Heat 140 kJ/kg*K 120 kJ/kg*K 150 kJ/kg*K 160 kJ/kg*K Device Bead Diameter…
A chamber of unknown volume is filled with an unknown amount of ideal gas. A cylinder with an open bottom and calibrated volume is connected to the chamber and is closed with a movable piston. A gas pressure sensor is also mounted on the chamber as shown in the figure. The whole experimental setup is kept at a constant temperature of 300 K. Doris moves the piston from mark 0 to mark 200 mL in steps of 50 mL and records the corresponding pressure in the chamber (see the table below). She moves the piston very slowly and waits several minutes before recording the pressure values. VCyl(mL) P(105N/m2)) 0 4.35 50 3.85 100 3.50 150 3.15 200 2.90 Determine the volume of the chamber using Doris's data in the table. (Note: This is a problem that requires linearization of data.) Determine the number of moles of gas. (Note: This is a problem that requires linearization of data.)
When stress is applied to a liquid over an application time tp the liquid needs a relaxation time tc to accordingly deform. Relaxation time tc is a physical property of liquids. The Deborah number is De= tdt, . The lower the Deborah number of a stress applied to a material the more.. : Select one: O The material behaves like a solid O The material behaves like visco-elastic O The material behaves like a liquid
Newton's Law of cooling states that the rate at which heat is lost by a heated body is proportional to the difference in temperature between the body and the surrounding medium. Match the following statements/phrases with the corresponding item in the drop down box. Choices in the box 1. In accordance with the stated law obove, we have the equation? 2. If a thermometer is taken outdoors where the temperoture is 5 deg C, from a room in which the temperature is 20 deg C and the reading drops 10 deg C in one minute, the working equation is? 3. In the obove problem, separoting the variables and integrating will result to? 4. In the obove problem, how long, in minutes, after its removal from the room will the reading be 6 deg C? 5. In the obove problem, ofter 30 seconds, whot will be the thermometer reading? 5.2 dT(body temp)/dt = k(Temp of medium - 5) dr(body temp)/dt = k(Temp of body - Temp of medium) Temp of body = Cenkt +5 2.5 13.7 dr(body temp)/dt = k(Temp of medium - Temp of body)…
If the observed voltage given by a thermocouple of type K equals to 72.5 mV then for an amplification factor of 40 the actual voltage is: Select one: a. 0.0018125 mV. b. 0.0018125 V. c. 2.9 mV. d. 0.029 V.
Truncation errors are increased as the round-off errors are decreased.Group of answer choices True False Say, you have a thermometer and you are checking the temperature of a body that has a temperature of 36o Using your thermometer five times, it gives you the following measurements: 29oC, 29.2oC, 29.3oC, 28.9oC, and 29.1oC. What can we conclude about the accuracy and the precision of the thermometer?Group of answer choices The thermometer is not accurate and not precise The thermometer is faulty. The thermometer is accurate and precise The thermometer is not accurate but precise. Say, you have a thermometer and you are checking the temperature of a body that has a temperature of 36o Using your thermometer five times, it gives you the following measurements: 36oC, 35.6oC, 36oC, 37oC, and 36.2oC. What can we conclude about the accuracy and the precision of the thermometer?Group of answer choices The thermometer is accurate and precise. The thermometer is accurate but not precise. The…
A thermoeleman circuit given as voltage-temperature correlation E=a·T will measure the temperature in an environment, T1 = 290ºC > T2 > T3 = 0ºC. This thermoeleman produces a voltage of 16.32 mV at (T1-T3) temperature awareness and 15.3 mV at (T1-T2) temperature awareness. How many ºC is T2 temperature? a. 18.64 b. 18.75 c. 20.00 d. 19.97 e. 18.13
Question 5.1: A thermopile is constructed with chromel-alumel materials. Five junctions are maintained at 400-C and five junctions are maintained at 100°C. The output of the thermopile is connected to a potentiometer. Answer the following questions: a) Draw the equivalent circuit and indicate all the given information. b) What is the voltage induced by the potentiometer? Given: Table 8.30 Temperature. °C -150 -100 <-50 <<-25 0 25 50 75 100 150 200 300 400 500 600 800 1000 1200 1500 1750 Thermal emf in absolute millivolts for commonly used thermocouple combinations, according to ITS(90) (Reference junction of 0 C)¹ Copper vs. Constantan (7) -4.648 -3.379 -1.819 -0.940 0 0.992 2.036 3.132 4.279 6.704 9.288 14.862 20.872 Chromel vs. Constantan (E) -7.279 -5.237 -2,787 -1.432 0 1.495 3.048 4.657 6.319 9.789 13.421 21.036 28.946 37.005 45.093 61,017 76.373 Iron vs. Constantan ( -6.500 -4.633 -2.431 -1.239 ( 1.277 2.585 3.918 5.269 8.010 10.779 16.327 21.848 27.393 33.102 45.494 57.953…