Problem details: A 15 kW, 280V, 1200 rpm WASHING MACHINE needs to be fed by a generator in your home. You have a friend in a generator manufacturer company. He gave you different options and as you're studying in EE department, he asked you to choose the best one from those! The generator details are as shown in Table 01. No Type of Generator Separately Excited Shunt Series 1 2 3 4 5 Table 01: Data for different types of generators Armature Field Series resistance resistance Resistance (S2) (52) Long shunt Short shunt 0.4 0.6 0.8 1.2 1.4 120 140 160 180 2.2 2.4 2.6 Note: X, Y are the last two digits of your student ID. Calculate the following things for each of the generator types: a) The generated voltage b) The field circuit voltage c) The developed torque d) The efficiency Also neatly draw the circuit diagram for all of them. Hysteresis loss (kW) 0.X 0.8 1.1 1.25 1.Y Based on the results you got, which one you should buy and why? Eddy current loss (kW) 1.3 0.Y 1.7 0.Y 1.2 Rotational loss (kW) X=9 Y=0 Suppose after 1 year, the washing machine got damaged. You went to Extra Store and decided to buy a new one with following rating: 15 kW, 840V, 1200 rpm. What should you do to use this machine, if you don't want to change the generator? Draw the modified circuit diagram. 1.2 2.2 1.X 0.4 1.5
Problem details: A 15 kW, 280V, 1200 rpm WASHING MACHINE needs to be fed by a generator in your home. You have a friend in a generator manufacturer company. He gave you different options and as you're studying in EE department, he asked you to choose the best one from those! The generator details are as shown in Table 01. No Type of Generator Separately Excited Shunt Series 1 2 3 4 5 Table 01: Data for different types of generators Armature Field Series resistance resistance Resistance (S2) (52) Long shunt Short shunt 0.4 0.6 0.8 1.2 1.4 120 140 160 180 2.2 2.4 2.6 Note: X, Y are the last two digits of your student ID. Calculate the following things for each of the generator types: a) The generated voltage b) The field circuit voltage c) The developed torque d) The efficiency Also neatly draw the circuit diagram for all of them. Hysteresis loss (kW) 0.X 0.8 1.1 1.25 1.Y Based on the results you got, which one you should buy and why? Eddy current loss (kW) 1.3 0.Y 1.7 0.Y 1.2 Rotational loss (kW) X=9 Y=0 Suppose after 1 year, the washing machine got damaged. You went to Extra Store and decided to buy a new one with following rating: 15 kW, 840V, 1200 rpm. What should you do to use this machine, if you don't want to change the generator? Draw the modified circuit diagram. 1.2 2.2 1.X 0.4 1.5
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter8: Basic Electric Motors
Section: Chapter Questions
Problem 12RQ
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