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Two three-phase generators are supplying to a common balanced three-phase load of 30 kW at 0.8 power factor lagging. The per-phase impedance of the lines connecting the generator G1 to the load is 1.4 + j1.6 Ω, whereas that of the lines connecting the generator G2 to the load is 0.8 + j1 Ω. If the generator G1, operating at a terminal voltage of 800 V (line to line), supplies 15 kW at 0.8 power factor lagging, find the voltage at the load terminals, the terminal voltage of the generator G2, and the real power, as well as the reactive power output of the generator G2.
The process produces a net amount of work equal to 4,500 J/mol and it exchanges an unknown amount of heat with the surroundings. Determine the amount of heat exchanged with the surroundings. Is this heat absorbed or rejected by the system?
Calculate the internal energy change for each of the following. a. One hundred (100.) joules of work are required to compress a gas. At the same time, the gas releases 23 J of heat
Estimate the heat-transfer coefficient for steam condensing on the outside, and on the inside, of a 25 mm o.d., 21 mm i.d. vertical tube 3.66 m long. The steam condensate rate is 0.015 kg/s per tube and condensation takes place at 3 bar
Repeat Problem 4.2.9 for a delta-connected set of capacitors with a per-phase reactance of -j60 Ω connected in parallel with the load, and compare the result with that obtained in Problem 4.2.9.
Also determine the maximum frequency of undistorted output that the op amp will produce at an amplitude of 3 V.
Develop project plans for the design and construction of the following processes. Use Figure 1.2 as a guide to the activities that must occur. Estimate the overall time required from launching the project to the start of operation.
For a reversible liquid phase reaction A-^R, the conversion is 33.3% after 8 minutes and equilibrium conversion is 66.7%. Find the rate equation for the reaction.
what is the total filtering area required to deliver 30 ft3 of filtrate in 1/2 h?
Identify the ionic compounds in solution A and solution B. Identify the blood-red precipitate. Calculate the concentration (molarity) of all ions in the original solutions.
Compute the value of the per-phase rotor resistance (referred to the stator) that must be added in series to produce a starting torque equal to the maximum torque.
How many of the following ground state electron configurations are allowed? 1s22s22p7 1s22s22p62d1
Determine the current needed in the coil to produce a flux density of 1 T in the center limb, if the excitation coil has 500 turns.
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