Explain the linearity of a transducer. The ear itself can be structured into three sections with the purpose to ... sensors causes frequency dispersion. 17-Following type of sensors are used to generate information in object grasping and obstacle avoidance. These instruments utilize the principle of expansion of wire, heat due to the current being measured, passing through the wire. In a broad sense, analog instruments may be classified into two ways: Absolute instruments:- Absolute instruments give the value of the electrical quantity to be measured in terms of the constants of the instruments and to its deflection, no comparison with another instrument being required. The pointer attains a steady position when controlling torque becomes numerically equal to deflecting torque i.e., Tc = Td Thermal effect What should be the size of the slide wire of the potentiometer to make it to achieve high accuracy? The pointer attains a steady position when controlling torque becomes numerically equal to deflecting torque i.e., Tc = Td. Which of the following material will be preferred as a shunt for extending the range of measurement of a voltmeter. E ∝ L ⇒ E = φL Analog sensors theoretically have infinite resolution but is limited by noise. Instrumentation Interview Questions Instrumentation MCQ Multiple Choice Questions. 16-Following is (are) the type(s) of Light sensor(s) (A) Photo sensor (B) Photo transistors (C) Photo conductors (D) All of the above. Multiple Choice Questions and Answers on Semiconductor Theory. Ques.10. In such instruments, there are sets of dials or gears which register the total quantity of electricity or the total amount of electrical energy supplied to a circuit in a given period. (A) Hall Effect sensor (B) Proximity sensor (C) Light sensor (D) All of the above. Controlling Torque Damping Torque: At the final deflected position, when the deflecting and controlling torques are equal, the pointer starts oscillating owing to its inertia and therefore, cannot immediately settle at its final deflected position. This deflecting torque can be produced by any of this effects of current (or of voltage) such as. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Show Explanation (A) 13.6 eV (B) 6.8 eV (C) 3.4 eV (D) 1.825eV 2.A freshly prepared radioactive source of half life 2 hrs emits radiation of ⦠Continue reading "MCQ : Modern Physics" What is the value of current (in A) flowing through the galvanometer, if the total current in the circuit is 5 A? They generally make use of a dial and a pointer for this purpose. Basically, there are three types of Force or torque act upon the Measuring Instrument Some examples of primary sensors are a liquid-in-glass thermometer, a thermocouple, and a strain gauge. If no extra force is provided to damp these oscillations, the moving system will take considerable time before coming to settle to the final deflected position. In Hall effect, the output voltage produced across the crystal is due to. Manganin is the usual alloy used for shunts because this material has a negligible temperature coefficient at the temperatures involved. The potentiometer makes use of null or balanced condition for the purpose of measurement. Electrostatic effect Rm = resistance of the ammeter = 25Ω This activity contains 10 questions. Voltmeter Robotics multiple choice questions and answers on Robotics MCQ questions quiz on Robotics objective questions with answer Page 2 info[at]objectivequiz[dot]com Login In such instruments, there are sets of dials or gears which register the total quantity of electricity or the total amount of electrical energy supplied to a circuit in a given period. A deflecting torque is required to overcome the inertia, damping effect and controlling effect of the moving system. Which of the following is its kinetic energy in the first excited state? ANSWER: A. Monometers . Induced voltage by the applied magnetic field C. Movement of charge carriers towards one end D. All of the above A measuring system exists to provide information about the physical value of some variable being measured. Explanation:- Damping Torque: At the final deflected position, when the deflecting and controlling torques are equal, the pointer starts oscillating owing to its inertia and therefore, cannot immediately settle at its final deflected position. Vr=(Rs×If)Vr=(Rs×If) (We know that Ra=0 ), Ques.7. So In the case of longer wire, the fall of potential per unit length is small. 19-Following acts as detector in Optical sensor, 1-(B), 2-(D), 3-(D), 4-(B), 5-(D), 6-(B), 7-(A), 8-(C), 9-(D), 10-(A), 11-(C), 12-(D), 13-(B), 14-(C), 15-(C), 16-(D), 17-(B), 18-(A), 19-(B), Your email address will not be published. The electronic amplifier is a very common type of signal processing element. Multiple Choice Questions and Answers on Semiconductor Theory. Practice Test: Question Set - 07 1. Solid State Detectors and Electronics â Sensor Physics I Helmuth Spieler TRIUMF Summer Institute 2007 LBNL Intrinsic Resolution of Semiconductor Detectors FWHM 2.35 i Q 2.35 i 2.35 i i E E FN F FEE E = Ë = Ë = Si: Ei = 3.6 eV F = 0.1 Ge: Ei = 2.9 eV F = 0.1 Detectors with good efficiency for this Ish = shunt current Ques.3. An ammeter measures the value of current flowing in the circuit, so current should flow inside ammeter to give proper result. Fd = m . A measuring system exists to provide information about the physical value of some variable being measured. (A) Hall Effect sensor a = m . Top 100 Sensors & Transducers Questions and Answers for Freshers : interview questions and answers for instrumentation and control engineering. Deflecting Torque: In order to move the pointer from its zero position on the scale deflecting torque is required. Integrating Instruments: 15-‘Any radiation of appropriate wavelength fall on the depletion layer of p-n junction develops a potential difference between the junction’ is working principle of, 16-Following is (are) the type(s) of Light sensor(s). An ammeter is used to. Lesser the potential gradient, more accurate is the potentiometer. For multi-range ammeters, the moving coil remaining same; separate shunts are used to increase the range of measurement of a single instrument. Dec 19,2020 - Modern Physics Practice Level - 1 | 45 Questions MCQ Test has questions of Class 12 preparation. The measurement sensor includes In some cases, the primary sensor and variable conversion element are combined, and the combination is known as a transducer. Signal recording 1-Which of the following is not covered under Mechanical energy domain? Multiple choice questions. Obviously, the magnitude of deflecting torque produced is proportional to the magnitude of the quantity being measured, say, the current I flowing through the instrument. Small Size: 2 3/4 x 2 x 1 1/4 inches, easy to use ⦠A shunt resistor is then used whose resistance is practically constant over the operating temperature range; this guarantees a constant ratio between the coil resistance and the shunt resistance. Spring control and gravity control are used for, Is inserted in series in a circuit and current to be measured flows through it, Is inserted in series in a circuit and part of the current to be measured flows through it, Is connected in parallel in a circuit and current to be measured flows through it. 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