UNITS OF MEASUREMENT • 1 horse power is 745.7 watts • 1 horse power = work equal to lifting 550 lbs of weight to one foot for one second • 1 calorie is equal to 4.2 Joules • 1 barrel is equal to 159 liters • 6 feet = 1 fathom • 1 kwh = 3.6 x 10 power 6 joules • A 100 watt bulb lights for 1 hour uses 100 watt hour of electricity • -273 degree centigrade is called absolute zero temperature. • Standard pressure is 760 mm or 14.7 lb/in2 • Gross is equal to 12 dozens • Mach 2 = 500 miles per hour • 1 nautical mile = 1825 meters • Unit of pressure is Pascal • Force is measured in Newton (SI), Dyne (CGS) • At -40 deg F Fahrenheit scale is equal to centigrade scale • Hertz and Angstrom are units of frequency • Units of work and energy are Joule and Erg (CGS) • Diopter is unit of power of lens • Unit is density is kg/m3 • Unit of power is watt, BTU (Board of Trade Unit) • Unit of electric charge is Coulomb • Unit of voltage is volt • Unit of electric resistance is ohm • Unit of capacitance is Farad • Unit of magnetic flux is Weber, Tesla • Unit of radio activity is Becquerel • Unit of luminous intensity is candle, lux • Unit of crude oil is Barrel • Unit of volume of water is cusec, cubic/sec • Unit of admittance is Mho • Unit of intensity or loudness of sound is bel • Unit of viscosity is Poise • Unit of flight speed is Mach I • Unit of atmospheric pressure is milli bar • Unit of wave length of light is Angstrom • Unit of energy is Electron volt • Unit of brightness is Lambert • Unit of luminous flux is Lumen • Intensity of illumination or unit of luminosity is Lux, Candela and Candle power • Unit of magnetic pole strength is Weber • Unit of RAD (Radiation Absorbed Dose) is Gray • Unit of Electric Current is Ampere • Unit of inductance is Henry • Unit of conductance is siemens. • Unit of heat is Joule, Calorie, BTU (British Thermal Unit) • Radio activity is measured in currie • Rutherford : strength of radioactivity • Torr: pressure
Posted on: Fri, 13 Sep 2013 19:11:58 +0000
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