IOT POLY ENGINEERING I1-07 Drill: Write down these questions and have 2 answers per questions. Be as specific with your answers as possible. Questions.

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Presentation transcript:

IOT POLY ENGINEERING I1-07 Drill: Write down these questions and have 2 answers per questions. Be as specific with your answers as possible. Questions that we deal with 1.Why do we measure? 2.What do we measure? 3.How do we measure? 4.When do we measure? 5.Where do we measure? 6.Who measures?

IOT POLY ENGINEERING I1-07 METROLOGY is the science of measurement, based on the Greek word ‘metron’. METROLOGY should not be confused with meteorology.

IOT POLY ENGINEERING I1-07 INTRODUCTION TO METROLOGY

IOT POLY ENGINEERING I1-07 Measuring instruments Ruler Thermometer Barometer Clock Scale Voltmeter GPS Hydrometer Viscometer Graduated Cylinder Radar Gun Speedometer Tachometer Accelerometer Spectrometer Protractor Compass Sphygmomanometer

IOT POLY ENGINEERING I FUNDAMENTAL SI UNITS: 1.LENGTH - meter 2.MASS - kilogram 3.TIME - second 4.ELECTRIC CURRENT - ampere 5.THERMODYNAMIC TEMPERATURE - Kelvin 6.AMOUNT OF MATTER - mole 7.LUMINOUS INTENSITY - candela Base Units

IOT POLY ENGINEERING I1-07 LENGTH English System 1 foot =12 inches 1 yard = 3 feet 1 mile = 5280 feet Metric System 1 m = 100 cm 1 m = 1000 mm 1 km = 1000 m 1 in = 2.54 cm

IOT POLY ENGINEERING I1-07 MASS English System 1 lb = 16 ounces 1 ton = 2000 lbs Metric System 1 kg = 1000 g 1 g = 1000 mg 1 lb = 2.2 kg

IOT POLY ENGINEERING I1-07 Time 1 minute = 60 seconds 1 hour = 60 minutes 1 day = 24 hours 1 year = 365 days

Metric System Prefixes IOT POLY ENGINEERING I1-07 PrefixSymbolScientific Notation TeraT10 12 GigaG10 9 MegaM10 6 Kilok10 3 Centic10 -2 Millim10 -3 Micro  Nanon10 -9 Picop Femtof10 -15

Metric System IOT POLY ENGINEERING I1-07 WHAT IS THE DEFINITION OF … A.MICROSECOND B.TERABYTE C. CENTIMETER D. KILOJOULE Seconds Bytes Meters 10 3 Joules

IOT POLY ENGINEERING I1-07 Derived Units A car travels 30 miles in 30 minutes. What is the speed of the car in miles/hr? New unit of measure of speed based on Length/Time

IOT POLY ENGINEERING I1-07 Derived Units What is the volume of a 3ft x 2ft x 6ft block of wood? Derived measurement of volume based on ft 3