In contrast, the resistance of an NTC thermistor decreases as temperature increases, and this type seems to be the most commonly used thermistor. Commercially available thermistors have nominal values of 1K, 2K, 10K, 20K, 100K, etc. Function of transducer is to convert A. Please enter your email address. Thermocouple. Thermistor material is pressed ________ Sanfoundry Global Education & Learning Series – Electrical Measurements. Thermistors have ________ ... Thermistor. The temperature range of thermistor when compared to RTD is: The temperature range of the thermistor is smaller as compared to RTD. LDRs and Thermistors in Circuits. A thermistor is a type of (A) Switch (B) Resistor (C) Battery (D) Power supply. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. 3. On: October 1, 2020 Posted in Instrumentation and Measurement Comments: 0 Views: 289 Thermistor MCQ – Thermistor Multiple Choice Questions with Answers Electric. ANSWER: A. We'll assume you're ok with this, but you can opt-out if you wish. Thermistor … You also have the option to opt-out of these cookies. A hygrometer is a _____ sensor. View Answer, 10. Please type your username. Lost your password? E-Mail* Video ID Locate the thermistor in the refrigerator section. d) Maxwell’s bridge Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. True. 900 J kg-1 °C-1 C. 1350 J kg-1 °C-1 D. 1800 J kg-1 °C-1 MCQ 2: In a laboratory, bunsen burner is used to increase the temperature of lime from 10 °C to 50 °C with the thermal energy of 80000 J. These cookies will be stored in your browser only with your consent. D. FET. 33. Thermistors ________ Youtube To practice all areas of Digital Circuits, here is complete set of 1000+ Multiple Choice Questions and Answers. Thermistors are a type of semiconductor, meaning they have greater resistance than conducting materials, but lower resistance than insulating materials. Please choose the appropriate section so the question can be searched easily. Thermistor can be considered as which type of Resistor: The thermistor can be regarded as a resistance thermometer whose resistance is dependent on the temperature. These cookies do not store any personal information. c) electric resistor MCQs of Boolean Algebra Let's begin with some most important MCs of Boolean Algebra. View Answer, 9. d) have a positive temperature coefficient of resistance Please choose an appropriate title for the question so it can be answered easily. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Thermistor is a contraction _________ a) thermal resistor b) laser resistor c) electric resistor d) mechanical resistor 2. Please choose an appropriate title for the question so it can be answered easily. View Answer, 8. b) reaches peak current immediately a) True A. positive temperature coefficient B. negative temperature coefficient C. zero temperature coefficient D. variable temperature coefficient . a) True d) 100 ῼ to 100 kῼ Practice Test: Question Set - 07 1. Thermistor (A) is a non-metallic resistor (B) has positive temperature coefficient (C) is chemically unstable (D) requires cold junction compensation MCQ 164 … Thermistor is a type of resistor in which the resistance changes rapidly with small change in temperature. Alongside this thermistors are used in industrial electronics. Thermistors are available in two types: PTC (positive temperature coefficient) and NTC (negative temperature coefficient). Answer/ Hint A copper cable has a length of 450 m and a cross-sectional area of 4.0 mm 2. A. Boolean algebra B. algebra C. … A thermistor is a solid state device and has larger sensitivity than does an RTD. It is mandatory to procure user consent prior to running these cookies on your website. Thermistor has At small values of voltage, a thermistor ________ Categories Electrical MCQs Tags thermistor Leave a comment Post navigation. Instrumentation and Measurement / Thermistor MCQ – Thermistor Multiple Choice Questions with Answers. Which of the following is correct for thermistors: Correct answer: 1. Vimeo Basic Concepts (Electrical Fundamentals) MCQs With Explanatory Answers. We also use third-party cookies that help us analyze and understand how you use this website. This category only includes cookies that ensures basic functionalities and security features of the website. C. Reverse- biased pin junction diode. c) under high pressure Is this question is a poll? Username* MCQ 1: Aluminum has the specific heat capacity of A. Q4. Sensors MCQ – Top 10 Multiple Choice Questions on Sensors, Tactile Sensor MCQ – Top 5 Multiple Choice Questions on Tactile Sensors, Which of the following is not an analog sensor, Synchronous Generator MCQ Part 1 – Alternator Multiple Choice Questions, Resistance of NTC thermistor increases with increasing temperature, Resistance of PTC thermistor decreases with increasing temperature. This value indicates the resistance value at a temperature of 25 o C. d) mechanical resistor A small change in temperature causes a large change in resistance. 1. switching algebra is also called? All Rights Reserved. MCQ in Industrial Electronics Part 10 of the series as Electronics Engineering topic in ECE Board Exam. cant find the answer or any suggestions in the notes! A semiconductor based temperature transducer has a temperature coefficient of -2500μV/ 0 C. This transducer is indeed a. a) positive temperature coefficient So the intermediate reading was done at ambient temperature, according to my AC thermostat it was around 26º (this one only gives integer numbers) . View Answer, 3. Add a Video to describe the problem better. Multiple choice questions on Thermistor with answers. Positive C. Zero D. None of these View Answer / Hide Answer. c) Hay’s bridge Electrical signal into non electrical quantity ... Thermistor is a transducer. Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". List different type of thermistors. Facebook Generally, thermistors are limited around 150 °C whereas RTDs can be employed for much higher temperatures. Please choose suitable Keywords Ex: question, poll. Although platinum is expensive it can be drawn into fine wires or strips and we only require small amounts for manufacturing RTDs. d) Ohm’s law Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". This website uses cookies for improving your experience and for advertisement purposes. Thermistor is more sensitive than platinum resistance thermometer The resistance of thermistor is solely a function of its absolute temperature whether the source of heat is external or internal Thermistor has linear temperature-resistance relationship Thermistor is a contraction _________ 450 J kg-1 °C-1 B. PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Thermistor”. Transducer - MCQs with answers Q1. c) sense small changes in temperature Save my name, email, and website in this browser for the next time I comment. © 2011-2020 Sanfoundry. Get notified by email when someone answers this question. A voltmeter is connected across the current path. Thermistor has low resistance. An Arduino sketch does not have the traditional main() function that's generally present in C programs. From the figure you can see that thermistors have high sensitivity. b) KVL Tags Measurement of Power & Related Parameters, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Electrical Measurements Questions and Answers – Resistance Temperature Detector, Next - Electrical Measurements Questions and Answers – Pressure Sensor, Electrical Measurements Questions and Answers – Resistance Temperature Detector, Electrical Measurements Questions and Answers – Pressure Sensor, Electrical & Electronics Engineering Questions and Answers, Electrical Engineering Questions and Answers, Linear Integrated Circuits Questions and Answers, Electrical Machines Questions and Answers, Electronic Devices and Circuits 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 – Strain Gauge Measurement Technique, Electrical Measurements Questions and Answers – Advantages of Bridge Circuits, Electrical Measurements Questions and Answers – Electronic Multimeter, Electrical Measurements Questions and Answers – Measurement of Low Resistance, Electrical Measurements Questions and Answers – Digital Multimeter, Electrical Measurements Questions and Answers – Basic Electronic Voltmeter, Electrical Measurements Questions and Answers – Megger. Strain gauge is a This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Thermistor”. Dialymotion Check the below NCERT MCQ Questions for Class 12 Physics Chapter 3 Current Electricity with Answers Pdf free download. Please type your E-Mail. Negative B. Since thermistors have a higher resistance than RTDs, the measur-ing current through them may be so low Thermistor: Example. 5. The typical size of a thermistor is 0.125mm to 1.5 mm. Its temperature coefficient is A. Negative . A thermistor has_____? Thermistors are suited for precision temperature measurements. Thermistors are classified into two types. IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG. Variable inductance: transducer is a linear variable differential transformer Variable capacitance: transducer is a parallel plate capacitor with a variable gap Synchros and resolvers: used to measure angular displacement Advantages of LVDT: The main electrical displacement transducers work on the principle of. 4. The RTD’s non-linearities can be corrected through proper design of resistive bridge networks. Video type Participate in the Sanfoundry Certification contest to get free Certificate of Merit. a) Anderson’s bridge First off, they are much much cheaper than all the above! View Answer, 6. Change in resistance is measured using a ________ One Comment to “A thermistor has_____?” Fighter says: 02/12/2018 at 7:43 PM. If the thermistor has been at a temperature of 20C for a long time and is suddenly exposed to a temperature of 100C, what will the sensed temperature be after a period equal to 5 time constants? Generally thermistors are fabricated from semiconductors. d) under low volume A thermistor is a resistance thermometer whose resistance is dependent on the temperature. View Answer, 4. Thermistors (thermal resistors) change their resistance with temperature, the hotter it gets the lower the resistance. A thermistor is similar to an RTD, but a semiconductor material is used instead of a metal. Thermistor follows which law for small variations ________ Which of the following is a practical application of thermistors: A thermistor finds its application in fire alarm applications, Automotives, and Food handling and processing. A. Thermistor. According to Sears Parts Direct, it should be located under a small plastic cover. View Answer. If the resistivity of the copper is 1.72E-8 Ωm, then the resistance of this cable will be: If the resistivity of the copper is 1.72E-8 Ωm, then the resistance of this cable will be: b) Wheatstone’s bridge A thermistor is a resistance-based temperature sensor and testing its accuracy is the first step toward determining whether the problem lies here, or elsewhere. Thermistor has a resistance of ________ Also note that the response of this thermistor is not linear. View Answer, 7. Thermistors have some benefits over other kinds of temperature sensors such as analog output chips (LM35/TMP36 (https://adafru.it/aK2) ) or digital temperature sensor chips (DS18B20) or thermocouples (https://adafru.it/cl0). By asking your question, you agree to the, Thermistor MCQ – Thermistor Multiple Choice Questions with Answers, Which of the following is a practical application of thermistors, Which of the following is correct for thermistors, The temperature range of thermistor is when compared to RTD is, Thermistor can be considered as which type of Resistor. This platinum which not only has a high resistivity (more than six times that of copper) but also a high degree of stability and a wide temperature range. a) under zero pressure Quick Questions. Semiconductor based sensor. Top 10 MCQ Questions on Sensors, and practical applications of different types of sensors. Once you find it, release the thermistor cover and pull the thermistor out of … a) reaches peak current slowly b) cannot sense any change in temperature This is the Multiple Choice Questions Part 9 of the Series in Industrial Electronics: Principles and Applications as one of the Electronics Engineering topic. NTC thermistors are small, rugged ceramic semiconductors manufactured from compositions of the oxides of metals, such as manganese, nickel, cobalt, copper, and/or iron. a) Charle’s law b) negative temperature coefficient It is a/an . This website uses cookies to improve your experience while you navigate through the website. 30. Join our social networks below and stay updated with latest contests, videos, internships and jobs! c) zero temperature coefficient Question is ⇒ A thermistor has, Options are ⇒ (A) positive temperature coefficient, (B) negative temperature coefficient, (C) zero temperature coefficient, (D) variable temperature coefficient, (E) , Leave your comments or Download question paper. A sensor is a device that takes input from the physical environment. Necessary cookies are absolutely essential for the website to function properly. Resistance Thermometer. Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. 1) ... Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. b) False Question Title* MCQ Exam ON : Process Control and Instrumentation . In this example you need to read the graph to find the data needed for the equation. The term thermistor is a combination of thermal and resistor. a) thermal resistor b) 50 ῼ to 10 kῼ By asking your question, you agree to the Terms of Service and Privacy Policy .*. Correct Answer. The resistance of a PTC thermistor increases as the temperature increases. a) 250 ῼ to 500 kῼ A thermistor is a resistance thermometer. We have provided Current Electricity Class 12 Physics MCQs Questions with Answers to help students understand the concept very well. b) laser resistor A bare 5% thermistor is only 10 cents in bulk. d) infinite temperature coefficient View Answer, 2. c) does not reaches peak current Three important characteristics of thermistors are: 1. the resistance – temperature characteristics, 2. the voltage – current characteristics, 3. the current – time characteristics. When an RV fridge starts to generate excess frost and turns the milk into popsicles, it is time to check the thermistor. Variable resistance: transducer is a strain gauge. Each NTC thermistor composition or mix, has a specific ratio of metal oxides which defines the thermistor’s physical dimensions, R/T curve and its resistance at 25°C. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. c) KCL by . Choose from here the video type. But opting out of some of these cookies may have an effect on your browsing experience. MCQ Questions for Class 12 Physics with Answers were prepared based on the latest exam pattern. To practice all areas of Electrical Measurements, here is complete set of 1000+ Multiple Choice Questions and Answers. 1. ... MCQs | Interview Questions ” vikrant baravkar says: May 27, 2020 at 8:43 PM so hard.but interesting. Type the description thoroughly and in details. Figure 2 shows the response of a NTC thermistor between -40°C and 60°C. Sensitivity: The voltage drop across an RTD provides a much larger output than a thermocouple. The plastic cover is attached to the surface of the back wall, sidewall or ceiling. b) False b) under low pressure B. Forward-biased pin junction diode. The thermistor is a sensor whose resistance varies with temperature and it can be used to sense temperature. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. a question in a previous exam paper for college. A pinoybix mcq, quiz and reviewers. Figure 1: Thermistor resistance changes with temperature. a) sense large changes in temperature thermistors. View Answer, 5. Define thermistor. Discuss the significance of your result. You will receive a link and will create a new password via email. Contains latest information on sensors as well. The relationship between a thermistor’s temperature and its resistance is highly dependent upon the materials from which it’s … d) reaches peak current intermediately c) 1 ῼ to 1 kῼ If you want to be doing a poll click here. Multiple Choice Questions and Answers By Sasmita January 9, 2020 Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier ) In addition to reading the questions and answers on my site, I would suggest you to check the following, on amazon, as well: 1.