It is very useful for Electrical &Electronics and Electronics and Communication Engineering Students. Here explained the all types of Electrical and Electronics instruments with relevant diagram and Equations
5. Operating Forces of Indicating
Instruments
1. Deflecting Force
2. Controlling Force
3. Damping Force
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TECHNOLOGY, COIMBATORE
13. Types of Damping System
1. Air Friction Damping
2. Fluid Friction Damping
3. Eddy current Damping
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17. Analog Ammeter and Voltmeter
Types of Instrument
1. Permanent Magnet Moving Coil (PMMC) type
Instrument.
2. Moving Iron type Instrument
3. Electro Dynamometer type Instrument
4. Hot wire type Instrument
5. Thermocouple type Instrument
6. Induction type Instrument
7. Electrostatic type Instrument
8. Rectifier type Instrument
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TECHNOLOGY, COIMBATORE
22. Moving Iron Instruments
Classification
1. Moving Iron Attraction Type Instruments
1. Moving Iron Repulsion Type Instruments
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23. Moving Iron Attraction Type
Instruments
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24. Moving Iron Repulsion Type
Instruments
Radial Vane Type
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26. Errors in MI Instrument
1. Hysteresis Error
2. Temperature Error
3. Stray Magnetic Fields
4. Frequency Error
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TECHNOLOGY, COIMBATORE
111. Construction
• Fixed Coil
• Moving Coil
• Control System
• Moving System
• Damping System
• Shielding
• Cases and Scales
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TECHNOLOGY, COIMBATORE