Engineering, 09.10.2019 22:20 HelenKellerwasaSlutt
The following test data were taken on a 5.5 kw, four-pole, 220-v, 50-hz, y-connected im having a rated current of 28 a. dc test: vdc = 13.6 v idc = 28.0 a no-load test: vl = 208 v f = 50 hz i = 8.17 a pin = 420 w locked-rotor test: vl = 25 v f = 15 hz i = 27.9 a pin = 920 w (a) determine the per-phase equivalent circuit of this motor. 4 marks (b) if the motor runs at 1425 rpm, calculate the input current drawn using the equivalent circuit parameters. 4 marks (c) solve the equivalent circuit and plot power input, input current, power output, toque, power factor as a function of speed (slip). draw the torque versus speed characteristics of the motor.
Answers: 1
Engineering, 03.07.2019 14:10
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Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
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Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 18:10
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The following test data were taken on a 5.5 kw, four-pole, 220-v, 50-hz, y-connected im having a rat...
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