With a need to make quality products which meet design specified tolerances, a large number of firms, research and development centers, and school and college laboratories use measuring instruments that have high accuracy and precision. Mechanical measurements mechanical engineering questions. Mcq on measuring instruments 1 how engineering works. The instruments which measure the total quantity of electricity delivered in a particular time are called a absolute instruments. Resolution of measuring instruments if the instrument is being used for measurement, there is a minimum change in the input for which certain detectable change in the output is observed.
Home mechanical engineering mechanical measurements. Without these instruments, it is not possible to measure the dimensions of the specimen. Important measuring instruments multiple choice questions. Vernier caliper is a widely used linear measurement instrument with a least count of 0. Measurements will be of mainly length, mass, time, angle, temperature, squareness, roundness, roughness, parallelism etc. Classification of measuring instruments electrical. In this page you can learn various important measuring instruments multiple choice questions answers,mcq on electrical measuring instruments with answers,mcq on instrumentation and measurement,sloved electrical measuring instruments objective questions answers, instrumentation multiple choice questions answers etc.
Fundamentals of instrumentation and measurementedited by dominique placko. Our offered mechanical measuring instruments feature a set of various tools which are widely used for measuring purpose and feature perfection and an unmatched accuracy. The ratio of measuring instrument output to the input dimension. Instrumentation and measurement multiple choice questions. Although there are a few good books available on metrology, the coverage of topics on mechanical measurements is either scanty or. Mechanical and other engineering measuring tools and instruments. These instruments are most widely used in engineering practice because they are simple and inexpensive. Instrumentation is a collective term for measuring instruments that are used for indicating, measuring and recording physical quantities. Engineering metrology and measurements is a core subject for mechanical, production, and allied disciplines in all the major universities in india.
Mechanical instruments are very reliable for static and stable conditions. Mechanical measurement mechanical engineering test questions. Different types of measuring tools and gauges used on ships. Engineering measurements and measuring instruments. Measurement is done to know whether the component which has been manufactured is as per the requirements or not. Sika usa provides a broad selection of mechanical measuring instruments such as industrial thermometers, dial thermometers, pressure gauges and load cells. Pdf electronic and electrical measuring instruments.
The devise that is used for measurement of certain physical quantity is called as measuring instrument. In addition linear units such as 1 in 30 or millimeters per meter are often used for specifying tapers and departures from squareness or parallelism. Because of these diverse geometrical forms, different types of methods, equipment and instruments are available to measure angles in common angular units of degree, minute and second. The digital measuring instruments indicate the values of the quantity in digital format that is in numbers, which. Fundamental measuring process standard measurand process of comparison result input measurement readout generalized measuring system signal conditioner modifies transduced signal into form usable by final stage. The term has its origins in the art and science of scientific instrumentmaking instrumentation can refer to devices as simple as directreading thermometers, or as complex as multisensor components of industrial control systems. Micrometer heads with a mechanical or electronic digital display, which allow direct reading of a measurement value, are also available.
The degree of agreement of the measured dimension with its true magnitude. The institution of mechanical engineers is the fastest growing professional engineering. In this contribution the importance of mechanical tolerances is demonstrated with some examples and the principal rules in order to reduce the influence of mechanical errors are discussed. Classification of measuring instruments instrumentation. It is basic instrument of measurement, consist of two types of scale. Measuring instruments plays a vital role in the engineering workshop. Mechanical, electrical and electronics instruments. Several factors come into the role in the selection of appropriate angular measuring instrument. Measuring instruments, least count, parts name and details.
This book dwells on the physical aspects of measurement techniques. Mechanical measurement mechanical engineering test questions 1 the reliability of an instrument mean a the life of the instrument b the degree of repeatability within specified limits c the time interval between two responses of the instrument d none of these view answer hide answer. The instruments duty is to measure the given specimen according to the given dimensions. Mechanical equipment is an integral part of each magnetic. Mechanical engineering measuring instruments answers. Then, sir joseph whitworth recognised the need to create and apply measurement standards across complex engineering assemblies. Magnetic measurement instrumentation developments at the ssc, supercollider 4. Classification, absolute and secondary instruments, indicating instruments. Here are 30 measuring instruments for mechanical engineer. Engineering measurements and measuring instruments home. The capacity of the height gauge is specified by the maximum height it can measure. They can be a single steel plate or a flexible tape type. This tool is one of the most famous measuring instruments in mechanical engineering.
General characteristics for selection of measuring instruments. Moritz gsi, darmstadt, germany abstract mechanical equipment is an integral part of each magnetic measurement. As they use mechanical parts these instruments cannot faithfully follow the rapid changes which are involved in dynamic instruments. This can measure the accuracy of the angles up to 0. I probes may be mechanical, optical, laser, or white light, among others. It is a piece of simple angular measuring equipment used for measuring an approximate angle of the component. In the field of magnetic measurements the mechanical equipment is mainly used for the. Graduates in electrical or mechanical engineering or any of the physical sciences are taught the essential disciplines of measurement science to enable them to design electronic measuring. Without these he was acutely aware of the detriment to machine performance and making items fit together better. These instruments converts the energy of the measured quantity directly into energy that actuates the instrument and the value of the unknown quantity is measured or displayed or recorded directly.
The meaning of instrumentation in engineering is the focus of operation and principle of measuring instruments used in configuration and design of automated systems. Here is some most commonly used mechanical instruments for measurement in industries. Measurement is not just a tool for determining quantities, the physical size of. The analogue instruments indicate the magnitude of the quantity in the form of the pointer movement. Mcq on electrical instrumentation and measurement multiple choice questions and answers on measurement and instrumentation mcqs questions quiz on electrical measuring instruments objective questions with answers question bank for test in pdf for competitive and entrance exams written test skills for job interviews and admissions in colleges and technical universities. If a steam pressure of 10 kgcm2 is to be measured, the range of. Fundamental measuring process standard measurand process of comparison result input measurement readout generalized measuring system signal conditioner modifies transduced signal into. The adjustment or setting of a measuring instrument to give. Types and use of precision measuring instruments bright. To the user of measuring instruments a knowledge of their construction and accuracy is. Beginners guide to measurement in mechanical engineering.
Download link is provided and students can download the anna university me6504 metrology and measurements mm syllabus question bank lecture notes syllabus part a 2 marks with answers part b 16 marks question bank with answer, all the materials are listed below for the students to make use of it and score good maximum marks with our study materials. Outline introduction and types of instruments engineering tolerance. Instrumentation and measurement in electrical engineering. Pdf electrical engineering gate previous years question papers collections with key solutions. Various specific terms describe the characteristics and quality of measuring instruments, defined as follows. A height gauge is a measuring device used either for determining the vertical distances or for the repetitious marking of items to be worked on. You can find here about tools and instruments used for measurement of. There are two main types of the measuring instruments. These are designed by our professionals using the highest grade of material to enable strength and high durability. Engineering measurements and measuring instruments posts. Ramkumar department of mechanical engineering iit kanpur october 24, 2017. Mechanical gauges are basically defined as the devices used for measuring the pressure at a point in a fluid by balancing the fluid column by the spring or dead weight.
Join online course of mechanical instruments step by step. Linear measuring instruments are used for the measure the straight surfaces of substances. Methods and techniques of measurements are becoming increasingly important in engineering in recent years laboratory programmes have been modernized, sophisticated electronic instrumentation has been incorporated into the programme and newer techniques have been developed. Types of precision measuring instruments used in industry. Every mechanical engineering student or employee should know about this.
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