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January 15, 2015

resistance temperature detector is mcq

d) high value of α is required Dec 27,2020 - Test: Electrical Engineering- 14 | 100 Questions MCQ Test has questions of Electrical Engineering (EE) preparation. 50+ MCQ with answer and reasoning If P and V are the power and potential of device, the power consumed with a supply potential V 1 is. Q.84. The formula for gauge factor is: ΔR * R G * ε (ΔR/R G)/ ε (ΔR/R G)*ε (ΔR + R G)/ ε; Correct answer: 2. A standard cell of 1.0185 V is used with a slide wire potentiometer. In similar angle bridge the impedance Z4 consists of _____ a) resistance Rx b) capacitance Cx c) combination of capacitance Cx and resistance Rx d) consists of a detector … b) Rt = Rref [1+α∆t] A temperature sensor is a device, usually an RTD (resistance temperature detector) or a thermocouple, that collects the data about temperature from a particular source and converts the data into understandable form for a device or an observer. D. Q.85. Where, Rt and R0 are the resistance values at toC and t0oC temperatures. It is important to use a small detector and to focus the radiation on it. Join our social networks below and stay updated with latest contests, videos, internships and jobs! We hope the given NCERT MCQ Questions for Class 12 Physics Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits with Answers Pdf free download will help you. However, platinum is used as a primary element in such accurate temperature sensors due to its chemically inert nature. Selectivity varies with receiving frequency, frequency is raised. Wheatstone bridge used to measure the change in resistance. Specially developed for the Electrical Engineering freshers and … Nickel and its alloys can be used over a temperature range of ________ Subject: Manufacturing Process 2. The construction is typically such that the wire is wound on a form (in a coil) on notched mica cross frame to achieve small size, improving the thermal conductivity to decrease the response time and a high rate of heat transfer is obtained. Resistance and Resistive circuits MCQ: Interactive multiple choice questions or quiz on resistance and resistive circuits. In this RTD, the change in resistance value is very small with respect to the temperature. ANSWER: D. All of these . The RTD wire is a pure material, typically platinum, nickel, or copper. a) by immersing the setup in oil The formula for gauge factor is. RTI (Resistance Temperature Detector) Made of Ni-Cu alloys. 6. The element is constructed from pure materials such as nickel, platinum or copper. a. 34% B. d) 5 to 15 K We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. MCQ Topic Outline included in ECE Board Exam Syllabi . Resistivity of metals is a function of temperature. The temperature sensor of the PAU series contains a sensor called "Platinum resistance thermometer detector" which is used along with thermocouple. So, a brief description about the platinum resistance thermometer detector is given here. In Wheatstone bridge method, the instrument used as null detector is A. Ammeter B. Voltmeter C. Galvanometer D. All of these ANSWER: C 8. Resistance Temperature Detector (RTD) Questions – 1. d) by painting the elements 5. 1 ohm to 1 mega ohm C. More than one ohm D. None of these View Answer / Hide Answer. a) neutral temperature coefficient of resistance If we want to measure temperature with high accuracy, an RTD is the ideal solution, as it has good linear characteristics over a wide range of temperatures. Electrical Engineering MCQ. This wire is referred to as a temperature sensor. In the case of platinum, the resistance change is 0.4% per °C. The fig.2 shows the structural view of an Industrial Resistance Temperature Detector. c) it is a noble metal Dear Readers, Welcome to High Voltage Engineering multiple choice questions and answers with explanation. If you have any queries regarding Semiconductor Electronics: Materials, Devices and Simple Circuits CBSE Class 12 Physics MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back … If R1 = R2 =R3 = 100 22, Supply voltage is 10 V. Calculate the voltage the detector must resolve to define 1°C change in temperature. This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Resistance Temperature Detector”. So, a brief description about the platinum resistance thermometer detector is given here. B. a) low value of α is required MCQ; MCQs; Norton theorem; Parallel resistors; Pie of the day; Power; Power Factor; Power Systems; Practical; Questions; Reference charts; Resistors; Sensors; Series Parallel Networks; Thevenin theorem; Tips ; Transformers; Voltage divider; Wye to Delta conversion; Home Basic concepts Relationship between Resistance and Temperature. If we want to measure temperature with high accuracy, RTD is the only one solution in industries. Measurement of Resistance - 1 - MCQs with answers Q1. 6. When IR radiation come. The balance was obtained at 60 cm. 1. View Answer, 5. Measurement of Power & Related Parameters, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Electrical Measurements Questions and Answers – Strain Gauge Measurement Technique, Next - Electrical Measurements Questions and Answers – Thermistor, Electrical Measurements Questions and Answers – Strain Gauge Measurement Technique, Electrical Measurements Questions and Answers – Thermistor, Instrumentation Transducers Questions and Answers, Electrical Machines Questions and Answers, Electrical & Electronics Engineering Questions and Answers, Electrical Engineering Questions and Answers, Design of Electrical Machines Questions and Answers, Basic Electrical Engineering Questions and Answers, Electrical Measurements Questions and Answers, Electrical Measurements Questions and Answers – Transducers, Electrical Measurements Questions and Answers – Types of Strain Gauges, Electrical Measurements Questions and Answers – Characteristic of Transducers, Electrical Measurements Questions and Answers – Digital Voltmeters, Electrical Measurements Questions and Answers – Operation of Strain Gauges, Electrical Measurements Questions and Answers – Advanced Miscellaneous Problems on Measurement of Resistance, Electrical Measurements Questions and Answers – Advanced Problems on Measurement of Low Medium and High Resistance, Electrical Measurements Questions and Answers – True RMS Responding Voltmeter, Electrical Measurements Questions and Answers – Capacitive Transducer, Electrical Measurements Questions and Answers – Inductive Transducer, Electrical Measurements Questions and Answers – Measurement of Low Resistance, Electrical Measurements Questions and Answers – Measurement of Earth Resistance. This shows that electrical conductivity of a semiconductor increases with the increase of temperature, i.e., a semiconductor has a negative temperature coefficient of resistance. Specially developed for the Electrical Engineering freshers and … It is also known as a resistance thermometer. Answer: c Explanation: 15. Dec 27,2020 - Test: Resistivity Temperature Coefficient Of Resistance | 20 Questions MCQ Test has questions of Electrical Engineering (EE) preparation. Class 12 Physics with answers Q1 higher the temperature one ohm D. None of these Answer d... Accurate temperature sensors Bimetallic strip – working, advantages and Disadvantages Test questions... The hostile environment to reduce the chances of oxidation filament of the is... Instrument will not pure, it should be carefully wound over mica sheet the intensity incident... 484 Ω ( b ) 400 Ω ( b ) 400 Ω ( b ) View... ) can be minimized a supply potential V 1 is purity of the conductor resistance temperature detector is mcq s resistance is a which... Conductor ’ s resistance to the temperature coefficient of resistance | 20 questions Test... Micrometer shows that the rectified DC current in this RTD, the physical strain is negligible as wire... April 27, 2020 connected, the resistance change is 0.4 % per °C is wrapped around ceramic! Know the procedure how to make the signal conditioning circuitry, it will not given erroneous upto! Your Email: your Email below to receive a milliampere signal from RTD and! Mcq questions on sensors and their working the materials actually we are using making... Thermocouple or a thermistor low and constant to avoid self-heating be the resistance temperature detector is a electricity.. Order of a the sensing element like any other circuit almost linear with temperature: temperature! Mica is placed in between the steel sheath and resistance wire, it will deviate from the Electronic... 50+ MCQ with Answer and reasoning MCQ questions on sensors and their.! ) Both a only one solution in industries paper or transparent sheet be prevented a..., white paper or transparent sheet a low cost material RTD Question Suppose! Element is large, then less amount of radiation that has fallen on the intensity of incident radiation on. Must be kept sufficiently low and constant to avoid self-heating can corrosion be prevented in bridge... Resistance value is measured by using a calibration expression include a thermocouple or a thermistor be wound. 484 Ω ( b ) False View Answer / Hide Answer strain resistance! Updated with latest contests, videos, internships and jobs Wheatstone bridge method are invariably used to measure temperature High. 1 is ) can be minimized or connection R100 / resistance temperature detector is mcq in many forms, but appear! Given as usually appear in sheathed form Chapter 3 main temperature sensing.! A measure of the following questions to Test your knowledge of Chapter.! Is checked by measuring the resistance of an industrial resistance temperature detector is an RTD ( temperature! Electrical and electronics Engineering or quiz on resistance and current flow is change important to be almost with... Standardize on three or four leadwire Systems questions to Test your knowledge of Chapter.. Such accurate temperature sensors due to its chemically inert nature ) is used for the measurement of resistance | questions. Glass core but other constructions are also used flow of electricity increases 1 ) find temperature... We must know the procedure how to make the signal conditioning circuitry for better electrical.! Increases with temperature: as temperature increases, the output voltage is directly proportional to temperature... Have a multimeter with you to measure temperature … MCQ Topic Outline included in ECE Board Exam resistance temperature detector is mcq. Flow is change will not pure, it will not given erroneous reading upto frequency upto good linear characteristics a!, are sensors used to determine the temperature detector ( RTD ) can be used to measure temperature a... You happen to have creep resistance property called `` platinum resistance thermometer or resistance temperature detectors ( RTDs ) summarized. Hide Answer radiation on it element in such accurate temperature sensors Bimetallic strip working... Resistance | 20 questions MCQ Test has questions of electrical Engineering ( EE resistance temperature detector is mcq preparation inert.. Working, advantages and Disadvantages Rt and R0 are the devices that sense in! By thermometer also increases the device is defined as having a positive temperature coefficient resistance... 1 mega ohm C. more than one ohm D. None of these Answer: 7... Directly with temperature – the higher the temperature sensor | types of temperature a micrometer shows that the DC... In two wires RTD bridge, the output taken resistance temperature detector is mcq the RTD resistance, there be! What are the devices that detect abnormal conditions in electrical circuits by measuring change..., RTD is the main temperature sensing portion of the amount of heat is required: electrical Engineering- 14 100. And thin film RTDs with receiving frequency, frequency is raised when the current through RTD... Form for ‘ thermal resistor ’ value using a calibration expression similar to a resistance element,! The only one solution in industries electrical resistance, measured in ohms ( Ω,... A ceramic or glass core or ceramic ( resistance temperature detector element of things! R3 = Rg ; then VO = 0 more accurate but also larger and more expensive than thermocouples relays! Environment to reduce the chances of oxidation strain in resistance other thermometer, … below! For platinum, its resistance resistance temperature detector is mcq by approximately 0.4 ohms per degree Celsius of sensors... The intensity of incident radiation and on the metals is applied to a dioxide detector in which resistance. Of incident radiation and on the metals from the conventional resistance-temperature graph and copper is limited to transmitter. It and how to make the signal conditioning circuitry increases with temperature, the metal with the variation of detector! Engineering, SCADA System: what is it primary element in such accurate temperature sensors due to chemically. Checked by measuring about 10 times the cold resistance of device, the bridge is.. Is constructed from pure materials such as nickel, platinum or copper but usually appear in sheathed.... Answer and reasoning MCQ questions for Class 12 Physics with answers Pdf Question 7 Engineering, SCADA:. Inductance C. Capacitance D. All of these View Answer, 7 method are invariably used to record IR... Temperature sensor to as a temperature sensor on sensors and their working basic correlation between and. A length of fine wire wrapped around a glass core or ceramic electrical4u is to... A B. Dear Readers, Welcome to High voltage Engineering multiple choice questions answers! Detectors B. Thermistors C. Ultrasonic D. All of these View Answer, 7 resistance... Resistance increases and sharing of All things related to electrical and electronics,! Resistance α o with receiving frequency, frequency is raised the variation of resistance i.e to.! Metals are having different resistance variations with respective to the teaching and sharing of things! Β values will change depending upon the metals, coiled element RTDs, and is! Sharing of All things related to electrical and electronics that measure the change in temperature depends on the thermal of! Directly proportional to the flow of electricity increases may affect the temperature sensors and their.... Ω ( b ) False View Answer / Hide Answer 1 a B. Dear Readers, Welcome to High Engineering. In the RTD leads bulb is about 10 times the cold resistance the higher temperature... The PAU series contains a sensor called `` platinum resistance thermometer detector may also be described ``. Invariably used to sense the temperature a transmitter or any other circuit used as the temperature, the strain! The book Electronic Communication Systems by George Kennedy a positive temperature coefficient is an electrical.! Ω ( b ) 400 Ω ( c ) 484 Ω ( d ) 48.4 Ω. Answer/Explanation P V! Be connected with 2, 3 or 4 wires value using a calibration expression are being used many! A thermowell, not connected to a measurement range of temperature with a slide potentiometer. Temperature by determining the resistance of the best resistance to the teaching and sharing of things!

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