Watch Queue Queue. Physics Practical viva-voce Questions-2019 Live Example- Potentiometer (Assuming that the student was assigned the experiment “To determine the internal resistance of a primary cell( which can not be recharged) using potentiometer“) 1.Examiner (E): What was the experiment allotted to you? Hence the name is Pt100. Wobble at a natural resonant frequency. Resistivity. Why are the resistances used in a resistance box is like 1,2,2,5,10,20,20,50,100,200, 200,500,1000,2000,2000,5000 etc? A permeable substance is one (a) which is a good conductor (6) which is a bad conductor (c) which is a strong magnet (d) through which the magnetic lines of force can pass very easily Ans: d. 3. Sample Question. The main… Read More. READ ALSO: Hall effect experiment viva. A-2. The 4 probe method for resistivity profiling, (a more popular variance of it, known as the Van Der Pauw method), has several notable advantages over the two probe method. Magnitized material . 3) Two wires A and B are made of same material has equal length and A is having twice the area of B. 45. Static resistance R of a diode can be defined as the ratio of voltage V across the diode to The current flowing through the diode. 37. Update date. Pt100 is a resistance temperature detector, made of material Platinum (= Pt_) and its resistance value at 0 °C temperature is 100 ohm (=_100). The copper strips are provided with terminals. A-3. Magneto vs hulk for example..first thing hulk fans do is remove mags ability to affect the iron in hulks blood. Questions (115) Publications (70,319) Questions related to Oscillation. … A-4. X-Ray Diffraction (XRD) Lab Manual Nanoscience and Nanotechnology Aug 16, 2017 … Magnetoresistance and resistance changes at 10 K as a function of applied magnetic field for a 0.5 μm channel length conventional spin valve biased at 5.5 mA. Conductance. I have not written the answer here because if you have performed the experiment it is … FAQ : X-Ray Diffraction [VIVA QUESTIONS] Lab Manual Nanoscience and Nanotechnology Aug 18, 2017 Oct 22, 2020 Manas Sharma. Even on comic vine fans often water down his abilities in fights so their heroes have a chance of winning. The main tools you will need to do these tests are 1) The Service Manual for your particular bike 2) an inexpensive multi-meter to measure ohms of resistance. An electric current in a conductor produces a magnetic field. The outline of the drawing board is drawn on the table with a chalk. The following are some of the frequently asked questions regarding X-ray diffraction(XRD) technique. A-1 Magnetic properties and high resistance. List various applications of magneto resistors . A permanent magnet in the shape of a thin cylinder of length 10 cm has M = 10 6 A/m. Questions (6) R = V/ I Where R - Static resistance of a diode V - Voltage across the diode I - current across the diode 24.Define dynamic resistance. How does the resistance of a wire depend on its dimensions? These are made by coiling wire carrying a current around a magnetic core. 41. In general the Hall effect refers to the fact that a … The device used to measure the voltage is provided with a very high input impedance (ASTM F84 recommends at least 10^6 x the resistivity of the specimen), thus the contact resistance is a small proportion of the resistance in the voltage measuring circuit. Enroll Free Courses Online: 2.1. State the Principle of a potentiometer. The spin valve is shown schematically in the inset. Since the magnetic needle always comes to rest along the magnetic north-south direction, the line is along the magnetic meridian. Viva + Answering the questions given at the end of instruction manual 10. these questions are divided into parts are as follows: Part 1 – Magento Interview Questions (Basic) This first part covers basic Magento Interview Questions and Answers. The unit itself consists of a number of parts, including breaking points, a capacitor and rotating magnets -- and any one of them could cause problems. Magnetic Susceptibility by Quincke Method Experiment is determined by using the FECL3 solution. (The students say that potential drop is proportional to length but the constant quantities are not mentioned) How can we increase the sensitivity of … Continue reading → A resistance temperature detector (RTD) can be connected with 2, 3 or 4 wires. 44. Viva Voce. Magnets have been used for a long time as a way to check steel components on production lines … Let's Take A Conductor With An Electric Conductivity Of Yo And A Current Density Vector J. What means 2-, 3- and 4-wire connection? A weak reading could indicate a magnet that has lost some of its strength. 2. It is noticed that the resistance of the sample changes when the magnetic field is turned on. Why then its effect is neglected in magnetism of materials? Andres Galvis. 43. List of all Other Experiments. Define resistance. 35. This works for breaker point and CDI type ignition systems. Below are the 15 important 2020 Interview Questions and Answers that are frequently asked in an interview. What is the principle behind X-ray crystallography? A Trivia Quiz On Magnetic Particle Testing! 31. (xiv) Theory of Meter Bridge Experiment to determine the resistivity. 33. Dynamic resistance of a diode can be defined as the ratio of change in voltage A dotted line is drawn perpendicular to the magnetic meridian. Q1. MAGNETISM and ELECTROMAGNETISM Questions :-1. Explore the latest questions and answers in Oscillation, and find Oscillation experts. Name the Physical quantities to be kept constant for Ohm’s law to be true. Hope that the above post gave you an idea of what happens in a viva voce. Ans The output resistance is the equivalent resistance that can be measured between the Terminal of the op-amp and ground. 46. Feedback. Some viva questions are listed here that might be useful for you to understand the experiment. 47. Electric motors and loudspeakers both use electromagnets. 34. Energy is stored in a magnetic field. Question: Exercise N°1: Giant Magneto Resistance Current Flow Figure 2: In The Upper Nanostructured We Reported A Multi-layered Material. 42. 34: What is the function of Capacitor in Electrical Circuits? 3. These were just some of the typical questions which … A Trivia Quiz On Magnetic Particle Testing! Q-11 What do you mean by slew rate of an op-amp.? Any magnet has two ends, each one called a: Magnetic field. How does one go about diagnosing a "no spark" situation? The role of the “field” component is simply to create a magnetic field (magnetic flux) for the armature to interact with, so this component can comprise either permanent magnets, or electromagnets formed by a conducting coil. If the magneto is generating the proper ohms, check to make sure the spark plug is working properly. 32. We guarantee that all of us at greenhouse effect gizmo question answer key offer an VIVA QUESTION AND ANSWERS FOR HALL EFFECT. The phenomenon, called magnetoresistance, is due to the fact that the drift velocity of all carriers is not same. A metre bridge contains a uniform resistance wire, AB having 1 m length, kept extended between two copper strips set on a wooden board. Viva Questions Quincke’s Method Experiment: 1.1. This Conductor Is Contained In Between Two Cylinders Of Axe Oz. Constantan. None of the above. The legend indicates the length-to-width aspect ratio for the polarizer/analyzer. 38. Hereafter the board should not be disturbed. 39. This phenomenon was discovered in 1879 by the U.S. physicist Edwin Herbert Hall. 40. Very Short Answer Type Questions. 30. Capacitance. Tesla is a unit of (a) field strength (b) inductance (c) flux density (d) flux Ans: c. 2. A proton has spin and magnetic moment just like an electron. Questions & answers on various topics >> Questions & answers on resistors. Questions & answers on resistors . Resources. analysis, precautions, questions and answers. 1) What is the best material used for making connecting wires? Nichrome. Questions: 14 | Attempts: 14328 | Last updated: Sep 23, 2020 . 1. This video is unavailable. Writer Bio. Hall effect, development of a transverse electric field in a solid material when it carries an electric current and is placed in a magnetic field that is perpendicular to the current. Tungsten. The applied magnetic field. I'll try to list them as lucidly as possible. How to determine magnetic susceptibility using FeCl3 liquid in Quincke’s tube experiment. Update date PHET EXPERIMENT PHOTOELECTRIC EFFECT TEAHCERS ANSWER KEY. A. Copper. 38. The energy stored in a magnetic field is equal to the work needed to produce a current through the inductor. Faraday rotation. ... Magneto resistor is a type of resistor in which the resistance changes when an external magnetic field is applied. In this post hide. Why constantan or manganin wires are used for making the resistance coils in resistance box? 2. Physics Lab Viva Questions. Check with your boat or small engine repair shop to see if the magnet can be recharged before replacing the magneto. What is a standard resistance? Electron spin. As for why magneto isn't ruling the world..marvel writers often water magneto down in fights because he is so powerful. The magneto on your lawnmower operates by using the power from the engine to generate alternate currents and send them to the spark plug. Question: Part 2: Magneto Resistance Calculation Let's Take A So-called Corbino Geometry (see Figure Below). Here are some questions which are not properly answered by students during Viva. Which of the following is true in this case? 29. 1. 2) Conductivity is the reciprocal of _____. 15 Viva Questions Magnetic Susceptibility by Quincke Method Experiment. Another copper strip set centrally on the board leaves two gaps amid the strips. Wear rubber safety gloves when working with any sort of electrical wiring. In Figure 2 The Layer, Whose Colour Is Light Grey, Is A Normal (non-magnetic) Metal And The Dark- Grey One Is A Ferromagnetic Metal. 20/09/2020 28/01/2019 by Dr Sushil Kumar. ENGINEERING FUNDA YOUTUBE CHANNEL SSASIT, SURAT ANALOG ELECTRONICS VIVA & INTERVIEW QUESTIONS PROF. HITESH DHOLAKIYA Ans Slew rate is the maximum rate of change of output voltage per unit … Watch Queue Queue EXPERIMENT NO.-11 Q-1.What device is used to produce a gradual change in impedance at the end of a waveguide? Define Magento with its architecture? 1. Giant Magneto Resistance - Science topic Explore the latest questions and answers in Giant Magneto Resistance, and find Giant Magneto Resistance experts. Learn how to properly test your magneto, stator or pickup coils. Opamp based Basic Projects We guarantee that all of us at greenhouse effect gizmo question answer key offer an VIVA QUESTION AND ANSWERS FOR HALL EFFECT. A-5. Specific resistance. Magnetic pole. (Assuming that the student was assigned the experiment “To determine the internal resistance of a cell using potentiometer“) ... (Thereafter the examiner may go on to questions based on the activities and demonstration experiments performed by the student.) Warnings . Calculate the magnetisation current I M. 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