units n dimension - CLD 10502- Chemical Process Principles...

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CLD 10502- Chemical Process Principles RAO Jan ‘05 1 1.0 BASIC CONCEPTS 1.1 Units, Dimensions and Conversion 1.1.1 Units 1. A measured or counted quantity has a numerical value and a unit . Example: 520 meter , 23.08 kilograms , 10 celcius , 0.0015 seconds 2. Units can be added, subtracted, multiplied and divided. x To add OR subtract the numerical value, ONLY IF the unit is same. Example 1: 2.05 kg – 1.56 kg b 120 hours – 56 seconds B 3 m – 1.8 mm B x To multiply OR divide the numerical value, may always be combined Example 2: 3 m x 4 m = 12 m 2 km h h km 35 5 7 = × s m m kg s kg / 40 ) 20 . 0 /( ) 0 . 8 ( 3 3 = 3. Units has three components;- 3.1 Base Units - for mass, length, time, temperature, electrical current, light intensity
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CLD 10502- Chemical Process Principles RAO Jan ‘05 2 3.2 Multiple Units - multiples or fractions of base unit Example: years, days, hours, minutes are defined in terms of seconds 3.3 Derived Unit - obtained in two ways;- a) by multiplying base or multiple units
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This note was uploaded on 05/08/2011 for the course ACCOUNTING 121210 taught by Professor Sdasdas during the Spring '10 term at Albany College of Pharmacy and Health Sciences.

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units n dimension - CLD 10502- Chemical Process Principles...

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