Electrical Measurement|教育線上App不用買

This unique free application is for all students across the world. It covers 124 topics of Electrical Measurements and Measuring Instruments in detail. These 124 topics are divided in 5 units.

Each topic is around 600 words and is complete with diagrams, equations and other forms of graphical representations along with simple text explaining the concept in detail.

This USP of this application is "ultra-portability". Students can access the content on-the-go from anywhere they like.

Basically, each topic is like a detailed flash card and will make the lives of students simpler and easier.

Some of topics Covered in this application are:

1. Introduction to measuring instruments 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. 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. Effect of External Resistance on Damping

20. Sensitivity of Galvanometer

21. Permanent Magnet Moving Coil Instruments (PMMC)

22. Taut Band instrument

23. Moving Iron Instruments

24. Errors in Moving Iron Instruments

25. Basic D.C. Ammeter

26. Multirange Ammeters

27. The Aryton Shunt or Universal Shunt

28. Basic D.C. Voltmeter

29. Multirange Voltmeters

30. Sensitivity of Voltmeters

31. Loading Effect, Precautions to be taken while using a Voltmeter, Requirements of a Multiplier and Ammeter and Voltmeter

32. Electrostatic Instruments

33. Types of Electrostatic Voltmeters

34. Idiostatic Connection

35. Kelvin Multicellular Voltmeter

36. Attracted Disc Electrostatic Voltmeter

37. Extension of Range of Electrostatic Instruments

38. Instrument Transformers

39. Current Transformers (C.T.)

40. Construction of Current Transformers

41. Potential Transformers (P.T.)

42. Ratios of Instrument Transformers

43. Theory of Current Transformers

44. Derivation of Actual Ratio

45. Derivation of Phase Angle ( θ ) of Transformer

46. Errors in Current Transformer

47. Theory of Potential Transformers

48. Difference between Instrument and Power Transformers

49. Power Factor Meters

50. Moving Iron Power Factor Meter

51. Frequency Meters

52. Weston Frequency Meter

53. Phase Sequence Indicators

54. Synchroscopes

55. Synchroscopes

56. Electrodynamometer or Weston Type Synchroscope

57. Moving Iron Synchroscope

58. Introduction to Power Measurement

59. A. C. Power

60. Electrodynamometer Type Instruments

61. Torque Equation

62. Single Phase Dynamometer wattmeter

63. Shape of Scale of Dynamometer wattmeter

64. Error due to Pressure Coil Inductance

65. Low Power Factor Electrodynamics Type wattmeter

66. Power In Three Phase System

67. Single or One wattmeter Method

68. Three wattmeter Method

69. Blondel's Theorem

70. Power Factor Calculation by Two wattmeter Method

71. Modified Version of 2 wattmeter Method as One wattmeter Method

72. One wattmeter Method for Reactive Volt-amperes Measurement

73. Extension of Range of wattmeter using Instrument Transformers

74. Phasor Diagrams and Correction Factors

75. Three Phase wattmeter

76. Measurement of Energy

77. Construction of Energy meter

78. Theory of Single Phase Induction Type Energy meter

79. Errors and Compensations

80. Light Load Adjustment or Friction Adjustment

81. Three Phase Energymeter

82. Use of C.T and PT. in Energy Measurement

83. Introduction to Tariff

84. Merz Price Maximum Demand Indicator

85. Phantom Loading

86. Self-Balancing Potentiometer

87. Potentiometers

88. Princlple of Potentiorneter

89. Slide Wire D.C. Potentiometer

90. Standardisation of Potentiometer

91. Crompton's D.C. Potentiometer

92. Vernier Potentiometer

All topics are not listed because of character limitations set by the Play Store.

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