Electrical Measuring Tools And Instruments Ppt

Electrical measuring instruments electrical measuring instruments chapter 1.

Electrical measuring tools and instruments ppt. Classification classified based upon the quantity they measure ammeter voltmeter classified according to the current that can be measured by them dc ac classified according to the effects used for working. Classified as indicating recording integrating. It is used by blacksmith and carpenters. Unit 9 measuring instruments basic d arsonval meter movement with rectifier to change ac voltage to dc voltage.

Multirange milliammeter 5 724. Powerpoint ppt presentation free to view. Pull push rule a measuring tool used to measure the length of an object in centimeter and inches. Air friction damping ii.

Electrical instruments ppt 1. Damping torque or restoring torque i. It consists of a ribbon of cloth plastic fiber or glass. Eddy current damping 2.

Essential requirement of indicating instruments 1. Name purpose ammeter ampermeter measures current capacitance meter. Measuring tapes are used to measure length in metres and centimetres. Below is the list of measuring instruments used in electrical and electronic work.

Whatever your role in the industry electrical designer purchase engineer manufacturer installation contractor technician or maintenance engineer a solid knowledge of electrical tests to be carried out on a given piece of hv and mv electrical. The unit of measure is ampere a. Ammeter an instrument used to measure the amount of electrical current intensity in a circuit. Principles of meter operations electrical systems series 724 1 powerpoint masters 720724 1 01pp 724 1 01 01 fig.

It is a common measuring tool. However common usage calls both instruments rulers and the special name straight edge is used for an unmarked rule. The first article based on the electrical measurement instrumentation emi. Milliammeter with shunt 4 724 1 02 03 fig.

Before starting any electrical or electronics device installations or studying electrical practical we should know about the measurements and its measuring instruments. Spring control method ii gravity control method 3. Its design allows for a measure of great length. Three common symbols for ammeters 3 724 1 02 02 fig.

Lecture on electrical measurement measuring instruments 2. Measures current without physical connection curve tracer. Unit 9 measuring instruments reading an analog meter is similar to reading a speedometer or fuel gauge. Electrical and electronics instruments n krishna prakash.

Here i am describing the major concepts of electrical measuring instruments in detail. Electrical measuring instruments 1 electrical measuring instruments chapter 2 ammeters voltmeters and wattmeters electrical systems series 724 1 powerpoint masters 720724 1 02pp 2 724 1 02 01 fig. Measures the capacitance of a component current clamp.