Engineering, 25.11.2019 21:31 kasey1292
A3-phase, 2300 v, 60 hz, 12-pole, y-connected synchronous motor has 4.5 per phase synchronous reactance and negligible stator winding resistance. the motor is connected to an infinite bus and draws 250 a at 0.8 power factor lagging. neglect rotational losses. a) determine the output power. b) determine the power to which the motor can be loaded slowly without losing synchronism. determine the torque, stator current, and supply power factor for this condition
Answers: 1
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 04.07.2019 18:10
Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines
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Engineering, 04.07.2019 18:10
Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.
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Engineering, 04.07.2019 18:10
Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.
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A3-phase, 2300 v, 60 hz, 12-pole, y-connected synchronous motor has 4.5 per phase synchronous reac...
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