Engineering, 07.11.2019 05:31 Dontslack
7.10 the forward converter of fig. 7-5a has parameters vs 100 v, n1/n2 5, n1/n3 1, lm 333 h, r 2.5 , c 10 f, and d 0.25, and the switching frequency is 375 khz. (a) determine the output voltage and output voltage ripple. (b) sketch the currents ilx, i1, i2, i3, ilm, and is. determine the power returned to the source by the tertiary (third) transformer winding from the recovery storage energy in lm.
Answers: 3
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.
Answers: 1
Engineering, 04.07.2019 18:10
The higher the astm grain size number, the finer the gran is. a)-true b)-false
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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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Engineering, 04.07.2019 18:10
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
7.10 the forward converter of fig. 7-5a has parameters vs 100 v, n1/n2 5, n1/n3 1, lm 333 h, r 2.5 ,...
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