Download the notes (in pdf file) from link below:
Download the same notes in small file size from 2nd link:
This notes consist of the following topics:
Permanent Magnet Moving Coil (PMMC) Instruments
1. Diagram
2. Construction
3. Equation of Torque, derivation
4. Types of control
5. Sensitivity
6. Disadvantage
7. Advantage
8. Errors
9.Explanation of Advantage
10. Application
11. Extension range of Ammeter
12.Properties of shunt
13.Extension range of voltmeter
14. Numerical and objective questions
Moving Iron (MI) Instrument
1. Diagram
2. Derivation of Torque and Energy stored
3. Controlling methods and its torque derivation
4.Advantage and Disadvantage
5. Numericals
6. Extension range of MI as Ammeter
7. Extension range of MI Voltmeter
EMMC or EDM (Electro-Magnet Moving Coil)
1. Working Principle
2. Derivation of Torque equation
3. Diagram
4. EDM circuit for Ammeter and Voltmeter
5. Equations of energy stored in magnetic coil
6. Types of control
a) for Ammeter
b) for Voltmeter
7. Points (Advantages and Disadvantages)
8. EMMC in case of A.C. Supply
a) Torque Equations
9. Numerical
Electrostatic Voltmeter (ESV)
1. Working Principles
2. Derivation of stored energy
a) Plate moving linear, scale non-linear
b) Movable circular plate
3. Points (Advantages and Disadvantages)
4. Types of ESV
5. Extension range of ESV
a) Potentiometer method
b) By connecting series capacitor (Case I and Case II)
6. Numerical
Download the same notes in small file size from 2nd link:
This notes consist of the following topics:
Permanent Magnet Moving Coil (PMMC) Instruments
1. Diagram
2. Construction
3. Equation of Torque, derivation
4. Types of control
5. Sensitivity
6. Disadvantage
7. Advantage
8. Errors
9.Explanation of Advantage
10. Application
11. Extension range of Ammeter
12.Properties of shunt
13.Extension range of voltmeter
14. Numerical and objective questions
Moving Iron (MI) Instrument
1. Diagram
2. Derivation of Torque and Energy stored
3. Controlling methods and its torque derivation
4.Advantage and Disadvantage
5. Numericals
6. Extension range of MI as Ammeter
7. Extension range of MI Voltmeter
EMMC or EDM (Electro-Magnet Moving Coil)
1. Working Principle
2. Derivation of Torque equation
3. Diagram
4. EDM circuit for Ammeter and Voltmeter
5. Equations of energy stored in magnetic coil
6. Types of control
a) for Ammeter
b) for Voltmeter
7. Points (Advantages and Disadvantages)
8. EMMC in case of A.C. Supply
a) Torque Equations
9. Numerical
Electrostatic Voltmeter (ESV)
1. Working Principles
2. Derivation of stored energy
a) Plate moving linear, scale non-linear
b) Movable circular plate
3. Points (Advantages and Disadvantages)
4. Types of ESV
5. Extension range of ESV
a) Potentiometer method
b) By connecting series capacitor (Case I and Case II)
6. Numerical
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Download the notes (in pdf file) from link below:
Download the same notes in small file size from 2nd link: