a) If the counter-eletromotive force Eo-80V when the motor reaches speed n=1000rpm, calculate what is the current in the armature at this time? b) What was the current in the armature right before the start of the motor, when speed n=0rpm? c) Draw the graph of current vs. speed from start to steady state, if the maximum speed n=1,875rpm. Es=160V R=20 Ohms Es 1 R

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Homework #5 (Motors)
a) If the counter-eletromotive
force Eo=80V when the motor
reaches speed n=1000rpm, calculate what is the current
in the armature at this time?
b) What was the current in the armature right before the
start of the motor, when speed n=0rpm?
c) Draw the graph of current vs. speed from start to steady
state, if the maximum speed n=1,875rpm.
Es=160V
R=20 Ohms
Es
1
R
Transcribed Image Text:Homework #5 (Motors) a) If the counter-eletromotive force Eo=80V when the motor reaches speed n=1000rpm, calculate what is the current in the armature at this time? b) What was the current in the armature right before the start of the motor, when speed n=0rpm? c) Draw the graph of current vs. speed from start to steady state, if the maximum speed n=1,875rpm. Es=160V R=20 Ohms Es 1 R
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