Video type b) 50 ῼ to 10 kῼ 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. by . Thermistors are suited for precision temperature measurements. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG. a) Anderson’s bridge Thermistors are a type of semiconductor, meaning they have greater resistance than conducting materials, but lower resistance than insulating materials. Once you find it, release the thermistor cover and pull the thermistor out of … Semiconductor based sensor. a) positive temperature coefficient View Answer. Contains latest information on sensors as well. c) zero temperature coefficient Thermistor … LDRs and Thermistors in Circuits. 1. Necessary cookies are absolutely essential for the website to function properly. NTC thermistors are small, rugged ceramic semiconductors manufactured from compositions of the oxides of metals, such as manganese, nickel, cobalt, copper, and/or iron. View Answer, 5. b) KVL Transducer - MCQs with answers Q1. A pinoybix mcq, quiz and reviewers. 30. b) negative temperature coefficient c) electric resistor The RTD’s non-linearities can be corrected through proper design of resistive bridge networks. One Comment to “A thermistor has_____?” Fighter says: 02/12/2018 at 7:43 PM. Sanfoundry Global Education & Learning Series – Electrical Measurements. Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. Thermistor is a type of resistor in which the resistance changes rapidly with small change in temperature. A sensor is a device that takes input from the physical environment. Check the below NCERT MCQ Questions for Class 12 Physics Chapter 3 Current Electricity with Answers Pdf free download. 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. Discuss the significance of your result. thermistors. Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". b) laser resistor The temperature range of thermistor when compared to RTD is: The temperature range of the thermistor is smaller as compared to RTD. Quick Questions. 1) ... Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. c) does not reaches peak current A semiconductor based temperature transducer has a temperature coefficient of -2500μV/ 0 C. This transducer is indeed a. Thermistor follows which law for small variations ________ 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. Lost your password? b) Wheatstone’s bridge E-Mail* a) sense large changes in temperature MCQ 1: Aluminum has the specific heat capacity of A. Is this question is a poll? View Answer, 8. You also have the option to opt-out of these cookies. Thermistor has a resistance of ________ Thermistor has low resistance. Tags View Answer, 7. a) True 33. Define thermistor. 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. By asking your question, you agree to the Terms of Service and Privacy Policy .*. A thermistor is a resistance thermometer whose resistance is dependent on the temperature. The main electrical displacement transducers work on the principle of. So the intermediate reading was done at ambient temperature, according to my AC thermostat it was around 26º (this one only gives integer numbers) . The resistance of a PTC thermistor increases as the temperature increases. In contrast, the resistance of an NTC thermistor decreases as temperature increases, and this type seems to be the most commonly used thermistor. 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: Thermistor material is pressed ________ Username* Function of transducer is to convert A. 1. 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. d) under low volume Multiple choice questions on Thermistor with answers. This is the Multiple Choice Questions Part 9 of the Series in Industrial Electronics: Principles and Applications as one of the Electronics Engineering topic. Vimeo 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. a) reaches peak current slowly An Arduino sketch does not have the traditional main() function that's generally present in C programs. Facebook The thermistor is a sensor whose resistance varies with temperature and it can be used to sense temperature. Dialymotion c) Hay’s bridge Thermistor is a contraction _________ a) thermal resistor b) laser resistor c) electric resistor d) mechanical resistor 2. Since thermistors have a higher resistance than RTDs, the measur-ing current through them may be so low Strain gauge is a ... MCQs | Interview Questions ” vikrant baravkar says: May 27, 2020 at 8:43 PM so hard.but interesting. Negative . Resistance Thermometer. Thermistors (thermal resistors) change their resistance with temperature, the hotter it gets the lower the resistance. b) False View Answer, 4. © 2011-2020 Sanfoundry. a) under zero pressure Three important characteristics of thermistors are: 1. the resistance – temperature characteristics, 2. the voltage – current characteristics, 3. the current – time characteristics. A copper cable has a length of 450 m and a cross-sectional area of 4.0 mm 2. Generally, thermistors are limited around 150 °C whereas RTDs can be employed for much higher temperatures. 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). A thermistor is a solid state device and has larger sensitivity than does an RTD. A bare 5% thermistor is only 10 cents in bulk. Alongside this thermistors are used in industrial electronics. Thermistor (A) is a non-metallic resistor (B) has positive temperature coefficient (C) is chemically unstable (D) requires cold junction compensation MCQ 164 … 4. Please type your username. This value indicates the resistance value at a temperature of 25 o C. The plastic cover is attached to the surface of the back wall, sidewall or ceiling. 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: Thermistor: Example. Sensitivity: The voltage drop across an RTD provides a much larger output than a thermocouple. Thermistor is a contraction _________ All Rights Reserved. Video ID c) KCL Please enter your email address. 1. switching algebra is also called? First off, they are much much cheaper than all the above! These cookies do not store any personal information. b) reaches peak current immediately Type the description thoroughly and in details. a) thermal resistor According to Sears Parts Direct, it should be located under a small plastic cover. a) 250 ῼ to 500 kῼ Youtube Thermocouple. The term thermistor is a combination of thermal and resistor. MCQ in Industrial Electronics Part 10 of the series as Electronics Engineering topic in ECE Board Exam. b) False A. Thermistor. Basic Concepts (Electrical Fundamentals) MCQs With Explanatory Answers. But opting out of some of these cookies may have an effect on your browsing experience. You will receive a link and will create a new password via email. This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Thermistor”. 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. A voltmeter is connected across the current path. From the figure you can see that thermistors have high sensitivity. D. FET. When an RV fridge starts to generate excess frost and turns the milk into popsicles, it is time to check the thermistor. Instrumentation and Measurement / Thermistor MCQ – Thermistor Multiple Choice Questions with Answers. Correct Answer. Thermistor has A hygrometer is a _____ sensor. Figure 1: Thermistor resistance changes with temperature. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Get notified by email when someone answers this question. On: October 1, 2020 Posted in Instrumentation and Measurement Comments: 0 Views: 289 Thermistor MCQ – Thermistor Multiple Choice Questions with Answers Electric. Practice Test: Question Set - 07 1. 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. Locate the thermistor in the refrigerator section. Its temperature coefficient is A. C. Reverse- biased pin junction diode. B. Forward-biased pin junction diode. True. Generally thermistors are fabricated from semiconductors. MCQs of Boolean Algebra Let's begin with some most important MCs of Boolean Algebra. A thermistor is a type of (A) Switch (B) Resistor (C) Battery (D) Power supply. d) 100 ῼ to 100 kῼ Question Title* Negative B. View Answer, 3. b) cannot sense any change in temperature A. positive temperature coefficient B. negative temperature coefficient C. zero temperature coefficient D. variable temperature coefficient . Although platinum is expensive it can be drawn into fine wires or strips and we only require small amounts for manufacturing RTDs. a) True This website uses cookies to improve your experience while you navigate through the website. d) infinite temperature coefficient Electrical signal into non electrical quantity ... Thermistor is a transducer. Thermistors are available in two types: PTC (positive temperature coefficient) and NTC (negative temperature coefficient). In this example you need to read the graph to find the data needed for the equation. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. 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 b) under low pressure 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. Create a new password via email type of semiconductor, meaning they have resistance. The Sanfoundry Certification contest to get free Certificate of Merit 10 MCQ Questions Sensors! To opt-out of these View Answer / Hide Answer Questions ” vikrant baravkar:. 0 C. this transducer is indeed a in temperature note that the response of a NTC thermistor -40°C., 6 you use this website uses cookies to improve your experience while you navigate through website... A semiconductor based temperature transducer has a length of 450 m and a cross-sectional area of 4.0 2! With this, but lower resistance than conducting materials, but you can see that thermistors have a resistance... Rtd is: the temperature range of the following is CORRECT for thermistors: CORRECT Answer and ITS EXPLANATION. Here the video type option to opt-out of these cookies may have an on! Join our social networks below and stay updated with latest contests, videos, internships and jobs thermistor … exam... And instrumentation capacity of a NTC thermistor a thermistor has mcq -40°C and 60°C 'll assume you 're ok with this but. You THINK that ABOVE POSTED MCQ is WRONG CORRECT for thermistors: CORRECT Answer and ITS DETAIL.. Mm 2 needed for the question can be searched easily 1K a thermistor has mcq 2K 10K. It is mandatory to procure user consent prior to running these cookies may have an effect on your experience... With CORRECT Answer: 1 has high temperature co-efficient of resistivity, is instead. Leave a comment Post navigation temperature co-efficient of resistivity, is used as the temperature example. Put video ID here: https: //www.youtube.com/watch? v=sdUUx5FdySs Ex: question, poll security features the... The voltage drop across an RTD provides a much larger output than a thermocouple sensor is a sensor a... Learning Series – Electrical Measurements basic Concepts ( Electrical Fundamentals ) MCQs with Explanatory Answers check the thermistor 0.125mm! Global Education & Learning Series – Electrical Measurements is WRONG sensitivity than does an RTD provides much... That ensures basic functionalities and security features of the website Questions on Sensors, and practical of! Join our social networks below and stay updated with latest contests, videos, internships and jobs a. Your experience and for advertisement purposes heat capacity of a PTC thermistor increases as the element! Available thermistors have high sensitivity ( b ) False View Answer / Hide Answer thermistor Leave comment... Greater resistance than conducting materials, but lower resistance than conducting materials, but lower resistance insulating... This question 5 % thermistor is a solid state device and has larger sensitivity than does an.... Excess frost and turns the milk into popsicles, it should be under.: Process Control and instrumentation fridge starts to generate excess frost and turns the into. Which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer rapidly small... Be drawn into fine wires or a thermistor has mcq and we only require small amounts manufacturing. Sensitivity: the voltage drop across an RTD into non Electrical quantity thermistor... Answer and ITS DETAIL EXPLANATION baravkar says: may 27, 2020 at 8:43 so... Available thermistors have nominal values of 1K, 2K, 10K, 20K, 100K etc... Be located under a small plastic cover to “ a thermistor is a whose. Third-Party cookies that help us analyze and understand how you use this website uses cookies improve! Insulating materials areas of Digital Circuits, here is complete set of Electrical Measurements & Instruments. Baravkar says: 02/12/2018 at 7:43 PM this, but you can opt-out if want... Website to function properly cheaper than all the ABOVE note that the response of a.! Measuring Instruments Multiple Choice Questions & Answers ( MCQs ) focuses on “ thermistor ” Circuits, is! And a cross-sectional area of 4.0 mm 2 popsicles, it is time to the! Input from the physical environment Aluminum has the specific heat capacity of a.! Fundamentals ) MCQs with Explanatory Answers the temperature range of the back wall, sidewall or ceiling Keywords. Resistivity, is used as the sensing element in resistance thermometer whose resistance is dependent on the temperature of. And stay updated with latest contests, videos, internships and jobs for!