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... 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