A 450 kw motor operating 73 power factor lagging is
A 450 kW motor operating 73% Power factor lagging is connected to a 120V(rms), 60Hz line. (a) Sketch and label the power triangle for the motor. (b) Find the rms current into the motor.
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For computer chip of 10mm (length), 10 mm(width) is operated by power of 0.345 watt, which surrounded by coolant material of temp of 70 F. The Internal energy rate is 3.5J/sec and kinetic energy rate is -4.5J/sec.
the saturated liquid and vapor mixture at t=300c and quality of 75%.the mixture occupies a volume of 0.05 m^3 (a) find the specific volume in m^3/kg (hints: vf= 0.0014 vg=0.02167m^3/kg at t =300c) (b) find the mass of the mixture in kg.
In ploystyrene beaker , we mixed 30 mL of 0.1 M sodium acetate and 15 mL of 0.1 M hydrocloric acid. we measured the PH ( in PH meter ) it was 4.86 and then we added 5 mL of 0.1 M NaOH to this buffer.
For each of these three possible indicators, give an example of an analyte and a titrant which best suits its use. changes color when the solution is slightly acidic (methyl red-HCl and ammonia?)
When heat and a stream of H2 gas is applied to the sample, the Fe2O3 reacts to form metallic Fe and H2O(g). The Al2O3 does not react. If the sample residue weighs 2.499 g, what is the mass fraction of Fe2O3 in the original sample?
A 150 KVAR capacitor is connected across the line in Problem 1. (a) Sketch and label the power triangle for the capacitor. (b) Sketch and label the power triangle for the combined loads (capacitor and motor).
A buffer solution is prepared by adding 0.125 mol of ammonium chloride to 500 mL of 0.500 M solution of ammonium. What is the pH of the buffer
100 kg of a certain gas is contained within a piston-cylinder assembly. the gas undergoes a processwhich the pressure volume relationship is (PV)^n = constant. The initial pressure is 6 bars, the initial volume is 0.2 cubic meters
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