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A 10 hp, Y-connected, 60 Hz, 380 V, three-phase induction generator is used to drive a small micropower plant. The generator's load is 500 W for a 4 A line current at 1740 rpm.
The rotor resistance is 4.56 Ω at 75°C. The losses are equal to 28 W. A no-load test of the machine gave the following results: P = 215 W, I = 3.0 A, and V = 380 V.
Calculate the output power, the efficiency, and the power factor for the given load. If the generator was Δ-connected with the same data as mentioned earlier, what would be the difference in your calculations?
The water velocity at a certain point along a 1:10 scale model of a dam spillway is 3 m/s. What is the corresponding prototype velocity if the model and prototype operate in accordance with Froude number similarity?
An air-cooled condenser is rated at 40 tons will be installed at an elevation of 5000 ft (1640 m) above sea level. The manufacturer advises a correction factor of 0.89 at an altitude of 5000 ft (1640 m). Determine the condenser rating at this elev..
methane ch4 at 25 c 1 bar enters a furnace operating at steady state and burns completely with 140 of theoretical air
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consider a 300 mm x 300 mm window in an aircraft. for a temperature difference of 80oc from the inner to the outer
car a starts from rest at t0 and travels along a straight road with a constant acceleration of 6fts2 until it reachers
Derive Euler's equations of motions stating all your assumptions. a) Write down the equation in vector form and explain the meaning of each term b) state the two conditions under which this equation may be amenable to integration?
water vapor an ideal gas enters a diffuser expansion device at a pressyre of 0.70 bar a termperature of 160 c and a
air is compressed in a piston-cylinder device from 90 kpa and 22 deg celsius to 900 kpa in a reversible adiabatic
Calculate the equivalent mass of the acid.
air is compressed from an initial temperature of 20 degc and pressure of 100 kpa to a final pressure of 1000 kpa. the
Helium gas enters a nozzle, whose isentropic efficiency is 95 percent with a low velocity, and it exits at 14.4 psia, 160 degrees F, and 940 ft/s. determine the temperature and pressure at the nozzle inlet.
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