In this blog, we will learn all the basic quantities used in the study of electrical engineering and also its SI units that you must know when you start your engineering course. SI units of fundamental quantity and measuring quantity both are necessary for getting an edge in the classroom guys. Let's start :
Question: What is a quantity?
Ans: A number or an amount of something (anything that can be measured is a quantity )
Question: What is a Unit?
Ans: A physical quantity, such as length, mass, energy, etc, specified multiples of which are used to express magnitudes of that physical quantity the second is a unit of time.
Quantity and Unit of terms used :
1. Length = Metre
2. Time = Second
3. Mass = Kilogram
4. Area = Square Metre
5. Volume = Cubic Metre
6. Velocity = Metre/second
7. Acceleration = Metre/ square second
8. Density = Kilogram/ cubic metre
9. Momentum = Kilogram-metre/second
10. Work = Joule
11. Energy = Joule
12. Force = Newton
13. Pressure = Pascal or newton/square metre
14. Frequency = Hertz
15. Power = Watt
16. Weight = Newton or kilogram
17. Impulse = Newton-second
18. Angular velocity = Radian/second
19. Viscosity = Poise
20 . Surface tension = Newton/ metre
21. Heat = Joule
22. Temperature = Kelvin
23. Absolute temperature = Kelvin
24. Resistance = Ohm
25. Electric current = Ampere
26. Electromotive force = Volt
27. Electrical conductivity = Mho/metre
28. Electrical energy = Kilowatt -hour
29. Electrical power = Kilowatt or watt
30. Magnetic intensity = Oersted
31. Charge = Coulomb
32. Magnetic induction = Gauss
33. Luminous flux= Candela
34. Intensity of sound = Decibel
35. Power of lens = Dioptre
36. Depth of sea = Fathom
So this is all about quantities and its SI units to remember.
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