1. xvi Measurement and Control Basics fluid flow has been expanded and impr oved in Chapter 9. efficient and useful 15 GB of storage less spam and. Measurement systems: Application and design, Doeblin Earnest. 8. 14. dictionary com s list of every word of the year. Thirteen Viva Questions on Vibrations Q.1. When the number of elements connected performs a specific function then the group of elements is said to constitute a system or interconnection of various components for a specific task is called system. Indian Institute of Science 1 / 4 19. O. Metrology includes all theoretical and practical aspects of measurement. Why is an allowance different from a tolerance? ∗ Consumer protection (legal metrology) Classified in different ways, they are: Systematic error, Random errors and illegitimate errors. Every measuring system must be provable. Metrology includes all theoretical and practical aspects of measurement. Mechanical Measurement and Control, MMC Questions For placement and exam preparations, MCQs, Mock tests, Engineering Class handwritten notes, exam notes, previous year questions… Why is a micrometer used for precise measurement of components in mechanical engineering? What are dimensional tolerances, and what are their primary uses? 1) what is Mechanics? Mechanical Measurement And Control- Dec 17 Mechanical Engineering (Semester 5) Total marks: 80 Total time: 3 Hours INSTRUCTIONS (1) Question 1 is compulsory. The degree of exactness (closeness) of a Accuracy of an instrument indicates the deviation of the reading from a known input. This goes from choosing the right measuring range, choosing the diameter of the dial, to preventing the pressure gauge from being subject to vibrations and even more of this kind of choices. What are dimensional tolerances, and what are their primary uses? Dictionary Com S List Of Every Word Of The Year. To control an event or an operation. At sea level. It is the difference between the upper limit and the lower limit of a dimension. Precision of an instrument indicates its ability to reproduce a certain reading with a given accuracy. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos. We made use of a scale/ steel rule (i.e. 4. Metrology is the process of making extremely precise measurements of the relative positions and orientations of different optical and mechanical components. Mechanics is sub divided into three Branches; Mechanics of rigid bodies, Mechanics of deformable Control Test Question Set 1. It can be used in conjunction with set of angle gauges and dial gauge for measurement of angles and tapers from horizontal surface. They are hardened and precision ground tools for accurate angle setting. Electrical Measurement Lab Viva Questions Electrical Measurements VIVA questions :-1. what is measurement? Metrology may be divided depending upon the Read the study material before making an attempt so that you build your confidence in the subject. 5. Since oil is a liquid it has the tendency to 'leak' through every gas/slot it finds during movement. 2. Measurement of gear tooth profile using gear tooth vernier /Gear tooth micrometer 8. Module 5 – Force, Torque, and Pressure Measurement. Save my name and email in this browser for the next time I comment. Mechanical Measurements & Metrology Lab Viva Questions and Answers Pdf Download :: Your email address will not be published. 23. 5. These are supplied by a designer to ensure the correct function of a device. Static and Dynamic pressures: ... it is used for storing the waveform in a digital form. 10. 4. 28. Cempalavras Pt. Metrology is the science of measurement. Pointer scale system used can cause parallax error. It is the extension of sine bars where two ends are provided on which centers can be Clamped. Hydraulic seals - Definition, Types, Diagram , Function, Failure, Application. This leakage of... Slotter Machine - Types, Parts, Operations, Diagram, Specification. ans. A vernier scale uses a second elongated scale to interpolate values on a major scale. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. 15) What are the methods of measurement? Free PDF Books - Engineering eBooks Free Download online Pdf Study Material for All MECHANICAL, ELECTRONICS, ELECTRICAL, CIVIL, AUTOMOBILE, CHEMICAL, COMPUTERS, MECHATRONIC, TELECOMMUNICATION with Most Polular Books Free. 10. high pressure hydraulic pump pistons) and a digital caliper just won’t do that. Thank you For Visiting. Home » Metrology Viva Questions » 300+ TOP MMM Lab Viva Questions and Answers. 27. What is a load cell? Mention different methods of measurements. Each material expands at a different rate. Although the LVDT is a displacement sensor, many other physical quantities can be sensed by converting displacement to the desired quantity via thoughtful arrangements. Why is an allowance different from a tolerance? 8. This atmospheric pressure is measured with the help of Barometer. 2.Mechanical Measurements / BeckWith, Marangoni,Linehard, PHI / PE. ans : Digital calipers are pretty accurate, but if you need precision, a micrometer is the way to go. Assuming that measurement is linear all across the scale. 15. Questions on Mechatronics system & Their Functions, Measurement System, Control System, Data Acquisition System, PLC Programming, Thermal System, Fluid System, Control Actions & On-Off … 5. Published February 13, 2017. Mechanical Measurements And Metrology Viva Question Answer Author: www.ftik.usm.ac.id-2020-10-28-12-24-04 Subject: Mechanical Measurements And Metrology Viva Question Answer Keywords: mechanical,measurements,and,metrology,viva,question,answer Created Date: 10/28/2020 12:24:04 PM What is L.V.D.T? So that high amplitude signals may be displayed, an attenuator network is placed between the vertical input terminals of the vertical amplifier. When a particle goes on one side from mean position and returns back and then it goes to other side and again returns back, then it is known as one vibration. Take the Quiz and improve your overall General Knowledge. 35. These standards are used to calibrate and verify measuring instruments. ∗ Meeting the requirements of ISO 9000 & 17025. 13) Draw the functional block diagram of a measurement system. What are fits? 5. Absolute Pressure: It is the pressure measured with reference to the Zero pressure or perfect vacuum. The questions are on Measurement and Instrumentation. ∗ Ability to trace measurements to international standards Currently, he is working in the sheet metal industry as a designer. System response: Response of a system may be defined as the ability of the system to transmit & present all the relevant information contained in the input signal & to exclude all others. 100% accurate measurements cannot be made at all the times. The Following Section consists Multiple Choice Questions on Basic Mechanical Engineering. 31. Define Accuracy. Through a mechanical arrangement, the force being sensed deforms a strain gauge. What is the difference between precision and accuracy? To control an event or an operation. A tolerance is the amount a single dimension can vary. Mechanical Measurements in mechanical engineering questions and answers for interview, entrance test and competitive examination freely available to download for pdf export Engineering :: Mechanical Measurements @ : Home > Mechanical Engineering > Mechanical Measurements. measure the pressure. Dictionary com s List of Every Word of the Year. Course Outline; Announcements; Courses Offered; Materials; Publications; Mechanical Measurement and Metrology [17ME46B] Assignment; Question Bank; MMM LAB VIVA Questions; Subpages (3): Assignment MMM-Notes Question Bank. It is used for measurement of an angle of a given job or for setting an angle. Mechanical engineering is the subject that applies engineering, physics, and material science principles to design, analyse, manufacture and maintain mechanical systems. Some things need to be measured in 1/10000ths of an inch (e.g. What is calibration? Very good excellent website for achieving in technology field all Engineer, Your email address will not be published. It is a branch of engineering that is related to industrial application of mechanics and with the tools, machinery and their products. 6. Define Repeatability. This leads to distortion of parts and measuring devices that results in measurement errors. In dynamic pressure, there exists a pressure gradient within the system. In other words, to and fro motion of a particle about a fixed point is known as vibration. Define fits. Measurement of Screw threads Parameters using two wire or Three-wire methods. 10. Answer. The LVDT converts a position or linear displacement from a mechanical reference (zero, or null position) into a proportional electrical signal containing phase (for direction) and amplitude (for distance) information. Mechanical ... Meterology. 11. There are number of moving parts which create problems due to friction, and ultimately the accuracy is less. Metrology is the science of measurement. The coverage is restricted to measurement techniques and systems that are complementary to engineering metrology. A list of top frequently asked Control System interview questions and answers are given below.. 1) What is meant by System? Temperature control during measurement is important because as materials are heated they expand. Advantages of Mechanical Comparator: 39. G 2)/(1 + G c. G 1. Many goods that you acquire are … The slotter or slotting machine is also a reciprocating type of machine tool similar to a shaper. 9. Required fields are marked *. The bast sets are used for calibrating others. Define Discrepancy. There are 9 questions to be attended in 20 minutes. For ex, in electrical measuring systems, the detector stage receives energy from the signal source, while the intermediate modifying devices and output indicators receive energy from auxiliary source. Metrology is the process of making extremely precise measurements of the relative positions and orientations of different optical and mechanical components. Free PDF Books. (2) Attempt any three from the remaining questions. 1. 106 TOP CONTROL SYSTEMS LAB VIVA Questions and Answers PDF. the output signals have the same phase relationships as that of input signal, the system is said to have good System response. These are unaffected by variations due to external source of energy such air, electricity etc. 12. What is the difference between precision and accuracy? Power and Energy Measurement 11. Gage Pressure It represents the difference between the absolute pressure and the local atmosphere pressure Vacuum It is an absolute pressure less the ANS: It is defined as branch of physical science which is concerned with the study of various forces acting on a body when body is in state of rest or in motion. ans. Metrology Questions And Answers Pdf Day Foundation. There are two It is the pressure exerted by the earth’s atmosphere and is usually measured by a barometer. 1. All of the chapters have been supplemented with new or improved exam-ple problems and exercises. Slip gauges a very accurately ground block of hardened steel used to measure a gap with close accuracy: used mainly in tool-making and inspection. Adaptation by Manik and Dhanesh/ TMH 3. Threshold: If the instrument input is increased very gradually from zero, there will be some minimum value of input below which no output change can be detected. The linear variable differential transformer (LVDT) (also called just a differential transformer) is a type of electromechanical transformer used to convert linear displacement into electrical signal. 1. The difference between two indicated values or results determined from a Supposedly fixed time value. In an open loop control system (a) Output is independent of control input (b) Output is dependent on control input (c) Only system parameters have effect on the control output (d) None of the above Ans: a. Following are the contents of module 5 – Force, Torque, and Pressure Measurement. Why are different grades of gauge blocks used? Measurement of Screw threads Parameters using two wire or Three-wire methods. To monitor an event or an operation. 2. what is accuracy of a measurement? Dimensional tolerances specify the amount a dimension may vary about a target value. The aim of this field is to monitor and operate technical events and production processes by means of automatic-running control systems. A discussion on types of control valves and control valve actuators was added to Chapter 10 and the section on control valve sizing was expanded and improved. The process of determining the amount, degree, or capacity by comparison (direct or indirect) with the accepted standards of the system units being used. Pressure is the force per unit area. Define vibration. Mention its unit?What is volume flow rate?… To understand an event or an operation. Oil under pressure is moving in every hydraulic circuit. It represents the summation of atmospheric pressure and gauge pressure. Thank you For Visiting. 29. Loading effect: The presence of a measuring instrument in a medium to be measured will always lead to extraction of some energy from the medium, thus making perfect measurements theoretically impossible. This conversion is indirect and happens in two stages. A plug gage goes into a hole, a ring gage surrounds a dimension. 300 TOP MECHANICAL Engineering LAB VIVA Questions And Answers. 25. Ex: an instrument with 30 cm scale has a higher readability than that of a 15 cm scale. Our experts have also made a set of process control and instrumentation job interview questions and answers which will help you to secure a job in a reputed industry. The process of determining the amount, degree, or capacity by comparison (direct or indirect) with the accepted standards of the system units being used. Mechanical engineering is the subject that applies engineering, physics, and material science principles to design, analyse, manufacture and maintain mechanical systems. Industrial application of mechanics and with the help of barometer le live measurement... Dimension may vary about a target value earth ’ s atmosphere and usually! Goes into a hole, a device conjunction with set of angle gauges and inspection... An act of comparing a quantitatively an unknown magnitude with a predefined standard product design, Animation, principles. With a given job or for setting an angle of a 15 scale. -Afsar Khan ( 12/23/16 ) Question 1 is compulsory this leakage of... 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