Homework Answers
Unit of Rt & Ro is ohm.
so (1+at+bt5) should be unitless.
that means bt5 should also be unit less.
so unit of b = (oC)-5 Answer
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21. A resistance thermometer is such that resistance varies with temperature as Rt = Ro(1+at+bTS) Where...
,. Design an Op-Amp-based thermometer as shown below. The thermistor has a resistance, Rr, that early...
,. Design an Op-Amp-based thermometer as shown below. The thermistor has a resistance, Rr, that early with increasing temperature; thus RT-α1 +8, where is the temperature in Fahrenheit, nts and AT is the resistance in k2. Two typical temperature/resistance values are shown in the table Temperature Room Temperature 70.6 50 Body Temperature 98.6 T (F) RT (ks2) 36 (a) Find the constants a and B. (b) Find RF, so that at room temperature, vi6 V (c) Find values for Ri...
14. A thermistors resistance varies with temperature as: R=R0eBT where R is in ohms Ω, T...
14. A thermistors resistance varies with temperature as: R=R0eBT where R is in ohms Ω, T is in kelvins, and R0 and B are constants. If R=8991.9 Ω at the ice point and R=358 Ω at the steam point, Ts=373.15K. Determine B.
My Notes 9. -11 points A thermometer is removed from a room where the temperature is 21° C and is...
My Notes 9. -11 points A thermometer is removed from a room where the temperature is 21° C and is taken outside, where the air temperature is -12° C. After one-half minute the thermometer reads 11° C. what is the reading of the thermometer at t = 1 min? (Round your answer to two decimal places.) How long will it take for the thermometer to reach -8° C? (Round your answer to two decimal places.) min
My Notes 9. -11...
The resistance of a RTD, RT, at a given temperature T is given by the following equation
(a) The resistance of a RTD, RT, at a given temperature T is given by the following equation: RT = R0 (1 + αT) where R0 is the resistance of the RTD at the reference temperature 0°C, α is the temperature coefficient at 0 °C. It is found that the resistance of the RTD are 130 Ω and 150 Ω at 10°C and at 50°C respectively. Calculate: (i) the temperature coefficient a, and (ii) the resistance of the RTD at 0°C, R0.(b) The RTD in part...
(2 points) A thermometer is taken from a room where the temperature is 20°C to the...
(2 points) A thermometer is taken from a room where the temperature is 20°C to the outdoors, where the temperature is -5° C. After one minute the thermometer reads 12°C. (a) What will the reading on the thermometer be after 4 more minutes? °C, (b) When will the thermometer read -4°C? minutes after it was taken to the outdoors.
Engr 213 (1 point) A thermometer is taken from a room where the temperature is 19°C...
Engr 213
(1 point) A thermometer is taken from a room where the temperature is 19°C to the outdoors, where the temperature is -15°C. After one minute the thermometer reads 8°C (a) What will the reading on the thermometer be after 2 more minutes? (b) When will the thermometer read-14°C? inutes after it was taken to the outdoors
(i) Let the resistance R of a piece of wire be a thermometric property for measuring...
(i) Let the resistance R of a piece of wire be a thermometric property for measuring the temperature T. Assume that where a and b are constants. The resistance of the wire is found to be 512 when it is at the temperature of melting ice and 70 when it is at the temperature at which water boils at atmospheric pressure. If the ice point is taken as 100° and the boiling point as 5000 on a particular scale, what...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature ...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature drops by 6K for every T km increase (a) Draw a cylindrical volume that is height inside the atmosphere, and then calculate the pressure change and expression (dP/dy-pg) depending on the height. (b) obtain the temperature change of the atmosphere accordingto the height y(km) in the place where the sea level (y-0) is at ToK temperature. (c) obtain a barometric equation which allows for the change...
using python = 1. (12 points) Suppose that you are writing a class called Temperature that...
using python
= 1. (12 points) Suppose that you are writing a class called Temperature that serves as a blueprint for objects that represent the temperature (in degrees and scale). For example, the following lines: t1 Temperature(10, "C") t2 Temperature(50, "F") would create Temperature objects representing the temperatures 10 degrees Celsius and 50 degrees Fahrenheit. (a) Define a Temperature class header and a constructor that can be used as shown above and allows the scale to be only the values...
2. Consider the Wheatstone bridge shown above in a platinum resistance thermometer between 0°C and 50°C....
2. Consider the Wheatstone bridge shown above in a platinum resistance thermometer between 0°C and 50°C. The resistance temperature rate is 8.2/°C. At 0°C, the nominal resistance is 500 12. This indicates that the three arms have a resistance of 500 12 each (R = R2 = R3 = 500 l) with an excitation voltage of 10 V. (a) Calculate the output voltage, V, at balance (0°C). (b) What is R4 at 25°C and 50°C? (c) What is the output...
,. Design an Op-Amp-based thermometer as shown below. The thermistor has a resistance, Rr, that early with increasing temperature; thus RT-α1 +8, where is the temperature in Fahrenheit, nts and AT is the resistance in k2. Two typical temperature/resistance values are shown in the table Temperature Room Temperature 70.6 50 Body Temperature 98.6 T (F) RT (ks2) 36 (a) Find the constants a and B. (b) Find RF, so that at room temperature, vi6 V (c) Find values for Ri...
My Notes 9. -11 points A thermometer is removed from a room where the temperature is 21° C and is taken outside, where the air temperature is -12° C. After one-half minute the thermometer reads 11° C. what is the reading of the thermometer at t = 1 min? (Round your answer to two decimal places.) How long will it take for the thermometer to reach -8° C? (Round your answer to two decimal places.) min
My Notes 9. -11...
(2 points) A thermometer is taken from a room where the temperature is 20°C to the outdoors, where the temperature is -5° C. After one minute the thermometer reads 12°C. (a) What will the reading on the thermometer be after 4 more minutes? °C, (b) When will the thermometer read -4°C? minutes after it was taken to the outdoors.
Engr 213
(1 point) A thermometer is taken from a room where the temperature is 19°C to the outdoors, where the temperature is -15°C. After one minute the thermometer reads 8°C (a) What will the reading on the thermometer be after 2 more minutes? (b) When will the thermometer read-14°C? inutes after it was taken to the outdoors
(i) Let the resistance R of a piece of wire be a thermometric property for measuring the temperature T. Assume that where a and b are constants. The resistance of the wire is found to be 512 when it is at the temperature of melting ice and 70 when it is at the temperature at which water boils at atmospheric pressure. If the ice point is taken as 100° and the boiling point as 5000 on a particular scale, what...
The atmospheric pressure varies proportionally from sea level to height, and the air temperature drops by 6K for every T km increase (a) Draw a cylindrical volume that is height inside the atmosphere, and then calculate the pressure change and expression (dP/dy-pg) depending on the height. (b) obtain the temperature change of the atmosphere accordingto the height y(km) in the place where the sea level (y-0) is at ToK temperature. (c) obtain a barometric equation which allows for the change...
using python
= 1. (12 points) Suppose that you are writing a class called Temperature that serves as a blueprint for objects that represent the temperature (in degrees and scale). For example, the following lines: t1 Temperature(10, "C") t2 Temperature(50, "F") would create Temperature objects representing the temperatures 10 degrees Celsius and 50 degrees Fahrenheit. (a) Define a Temperature class header and a constructor that can be used as shown above and allows the scale to be only the values...
2. Consider the Wheatstone bridge shown above in a platinum resistance thermometer between 0°C and 50°C. The resistance temperature rate is 8.2/°C. At 0°C, the nominal resistance is 500 12. This indicates that the three arms have a resistance of 500 12 each (R = R2 = R3 = 500 l) with an excitation voltage of 10 V. (a) Calculate the output voltage, V, at balance (0°C). (b) What is R4 at 25°C and 50°C? (c) What is the output...
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