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  Instruments and Testing

Introduction to Instruments and Testing

In this current world, make use of electricity everywhere is expected. As approximately all industrial machines, home appliances etc. are functioning on electrical energy, it is have to check and test the electrical energy for the quality of it before energizing machines or appliances. As well if the machines or appliances are not working on providing electrical energy, it is needed to perform some test to make out the fault. Thus here we will see some basic testing instruments and the use of those testing.

Voltage Tester Screwdriver:

A test light, voltage tester, test lamp, or mains tester is a extremely simple piece of electronic test equipment that is employed to ascertain the existence or nonexistence of an electric voltage in a piece of equipment under test.

Continuity Test:

Continuity considers to being part of an entire or connected whole. In electrical applications, while an electrical circuit is able of conducting current, it illustrates electrical continuity. It is also termed to be "closed," since the circuit is complete.

Multimeter or Continuity test

Continuity testers are simple devices that are designed to confirm a complete electrical path by an object or circuit. They are particularly helpful for testing fuses of all types, light-bulbs, and wire paths.

Open circuit test and Short circuit test:

Multimeter can be employed for this type of test. For this, multimeter has to be fixed in resistance mode of measurement. To test the presence of any open circuit or short circuit among any two points in the wiring circuit, the electrical supply to the circuit have to be switched off first. After that put the multimeter probes among the two testing points in the circuit. If multimeter reads '¥' ohm, it points out open circuit. If multimeter reads '0' ohm, it points out short circuit. This is displayed in the below diagrams.

Insulation Testing:

This testing is significant, as inadequate insulating can effect in leaking current. Leaking current produces heat that can cause a fire. The current can seep out and flow into other pathway, such as the water pipes in your bathroom or kitchen.

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