Electrical Measurements

Electrical Measurements is a free Electrical Engineering handbook covering important course topics, notes, diagrams, equations, formulas and study materials. Download this digital book and reference guide for ITI, Diploma, BE, BTech and other engineering degree courses.

Study 120+ topics across 5 units on measuring instruments, galvanometers, ammeters, voltmeters, instrument transformers, power factor, frequency, wattmeters and energy meters. Useful for exams, viva, technical interviews, assignments, projects and quick revision.

RELATED ENGINEERING BRANCHES
Electrical Engineering, Electrical and Electronics Engineering (EEE), Power Engineering, Electronics Engineering, Instrumentation and Control Engineering, and Electrical Technology.

82 LISTED TOPICS FROM 120+

MEASURING INSTRUMENTS & GALVANOMETERS
1. Introduction and Classification of Measuring Instruments
2. Deflecting System
3. Controlling System
4. Spring Control
5. Comparison of Controlling Systems
6. Damping System
7. Air Friction Damping
8. Fluid Friction Damping
9. D'Arsonval Galvanometer
10. Galvanometer Torque Equation
11. Intrinsic Constants of Galvanometer
12. Dynamic Behaviour of Galvanometer
13. Underdamped Motion
14. Undamped Motion
15. Critically Damped Motion
16. Overdamped Motion
17. Logarithmic Decrement
18. Settling Time
19. External Resistance and Damping
20. Galvanometer Sensitivity
21. Permanent Magnet Moving Coil (PMMC) Instruments
22. Taut Band Instrument
23. Moving Iron Instruments
24. Errors in Moving Iron Instruments

AMMETERS, VOLTMETERS & TRANSFORMERS
25. Basic DC Ammeter
26. Multirange Ammeters
27. Ayrton (Universal) Shunt
28. Basic DC Voltmeter
29. Multirange Voltmeters
30. Voltmeter Sensitivity
31. Loading Effect, Voltmeter Precautions, Multiplier Requirements and Ammeter-Voltmeter Use
32. Electrostatic Instruments
33. Types of Electrostatic Voltmeters
34. Idiostatic Connection
35. Kelvin Multicellular Voltmeter
36. Attracted Disc Electrostatic Voltmeter
37. Range Extension of Electrostatic Instruments
38. Instrument Transformers
39. Current Transformers (CT)
40. Construction of Current Transformers
41. Potential Transformers (PT)
42. Instrument Transformer Ratios
43. Theory of Current Transformers
44. Derivation of Actual Ratio
45. Transformer Phase-Angle Derivation (θ)
46. Errors in Current Transformers
47. Theory of Potential Transformers
48. Instrument vs Power Transformers

FACTOR, FREQUENCY & SYNCHRONIZATION
49. Power Factor Meters
50. Moving Iron Power Factor Meter
51. Frequency Meters
52. Weston Frequency Meter
53. Phase Sequence Indicators
54. Synchroscopes
55. Introduction to Tariff
56. Electrodynamometer (Weston) Synchroscope
57. Moving Iron Synchroscope

POWER MEASUREMENT & WATTMETERS
58. Introduction to Power Measurement
59. AC Power
60. Electrodynamometer Instruments
61. Electrodynamometer Torque Equation
62. Single-Phase Dynamometer Wattmeter
63. Dynamometer Wattmeter Scale Shape
64. Error Due to Pressure Coil Inductance
65. Low-Power-Factor Electrodynamometer Wattmeter
66. Power in Three-Phase Systems
67. One-Wattmeter Method
68. Three-Wattmeter Method
69. Blondel's Theorem
70. Power Factor by Two-Wattmeter Method
71. Modified Two-Wattmeter as One-Wattmeter Method
72. One-Wattmeter Reactive Volt-Ampere Measurement
73. Wattmeter Range Extension Using Instrument Transformers
74. Phasor Diagrams and Correction Factors
75. Three-Phase Wattmeter

ENERGY METERS & MEASUREMENT
76. Measurement of Energy
77. Construction of Energy Meters
78. Theory of Single-Phase Induction Energy Meters
79. Errors and Compensations
80. Light-Load (Friction) Adjustment
81. Three-Phase Energy Meter
82. Use of CT and PT in Energy Measurement

Use this free Electrical Measurements ebook to revise electrical instruments, power measurement and energy metering for engineering coursework and exams.