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A 3-kVA, 220:110-V, 60-Hz, single-phase transformer yields these test data:
• Open-circuit test: 200 V, 1.4 A, 50 W
• Short-circuit test: 4.5 V, 13.64 A, 30 W
Determine the efficiency when the transformer delivers a load of 2 kVA at 0.85 power factor lagging.
A geometrically similar 200 pump having a similar efficiency curve is used to pump water through 112.5 m of 150 mm pipe, f = 0.025. The static lift is 10 m. Neglecting minor losses in the pipe calculate the flow, head and power required to drive t..
Assume you have gas in a cylinder equipped with a piston. There are weights on the piston creating pressure down on the gas.
What is the required flow rate of cooling water to the exchanger between the wasteheat boiler and the absorber and how much heat must be removed by the two heat exchangers cooling the recycled absorber liquid? Why is there a need to remove this heat?
A mixture of 25% ammonia gas and 75 % air ( dry basis) is passed upward through a vertical scrubbing tower , to the top of which water is pumped. Scrubbed gas containing 0.5 % ammonia leaves the top of the tower, and an aqueou..
Discuss how the phase equilibria of mixtures are represented using diagrams similar to the pressure-temperature and pressure-specific volume diagrams for one- component systems. Use the example of a mixture of ethane and heptane to illustrate your..
Chemicals for Indoor Concrete Flooring, - indoor concrete maintenance chemicals used on indoor concrete flooring
Acetylene (C2H2) and butane (C4H10) are gaseous fuels with enthalpies of combustion of 49.9 kJ/g and 49.5 kJ/g, respectively. Compare the energy available from the combustion of a given volume of acetylene to the combustion energy from the same ..
Where 'k1' and 'k2' are rate constants,tR,maxis the time at which the maximum concentration of 'R' is obtain and CR,maxis themaximum concentration of 'R'
What is the maximum efficiency of a steam engine operating between 20° C and the boiling point of water, 100 °C, at one atmosphere?
What is the principle of lime Soda process? Give their functions with chemical reactions. 2. Write notes on reverse osmosis and ultra filtration.
Monczka-Trent Shipping is the logistics vendor for Handfield Manufacturing Co, in Ohio. Handfield has daily shipments of a power-steering pump from its Ohio plant to an auto assembly line in Alabama. The value of the standard shipment is $250,000...
Given the reaction 2N0, + - 0, = N205, what is the relation between2the rates of formation and disappearance of the three reaction components?
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