0xc = 1100
Hexadecimal digits use exactly 4 binary digits (bits). The 0x0 to 0xf of hexadecimal map to 0000 to 1111 of binary. Thinking of the hexadecimal digits as decimal numbers, ie 0x0 to 0x9 are 0 to 9 and 0xa to 0xf are 10 to 15, helps with the conversion to binary: 0xc is 12 decimal which is 8 + 4 → 1100 in [4 bit] binary.
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There is not any symbol for 3 Phase Powe, but it can be represented by 3O, 3Ph.
#LMGTFY The '#' symbol, known as the "hashtag", "number sign", or "pound sign" is the single line comment character.
I read this in a book that it's because all class files in Java are identified by a magic number which reads CAFEBABE in hexadecimal assembly. The software engineers that designed Java at Sun used to take a break in a nearby cafe during work hours where they checked out hot girls while sipping their coffee.
Frequency is a function of the speed of the alternator and the number of poles. The symbol for 'hertz' is 'Hz', not'hz'.