Engineering, 12.11.2019 20:31 markaylarowland8
A25-kva, 2300/230-v, single transformer has a high-voltage winding with a resistance of 1.5 and a leakage reactance of 2.4 . the low-voltage winding has a resistance of 0.015 and a leakage reactance of 0.024 . find the following: a) voltage regulation of the transformer for full load at 230 v and 0.866 power factor lagging. b) the efficiency of the transformer under the conditions of part (a).
Answers: 1
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
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.
Answers: 1
A25-kva, 2300/230-v, single transformer has a high-voltage winding with a resistance of 1.5 and a...
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