1 - For experiment A: a ) Plot on the same graph sheet the torque ( x - axis ) against the speed (y - axis ) for different values of I e b) Calculate the efficiency of the d. c. motor for each step and then plot the set of curves (efficiency ) y - axis against Ia ( x - axis ) on the same graph sheet. 2 - For experiment B: a ) Repeat 1 - a for different values of Re1 b ) Repeat 1 - b. 3 Give your comments about the resul ts obtained in this experiment.

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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Report :
1 - For experiment A :
a ) Plot on the same graph sheet the torque ( × - axis )
against
the speed (y - axis ) for different values of I e1
b) Calculate the efficiency of the d.
c. motor for each step and
then
plot the set of curves ( efficiency ) y - axis against I,
( x -
axis ) on the same graph sheet.
2 - For experiment B :
a ) Repeat 1 - a for different values of Re1
b ) Repeat 1 - b.
3
Give
your
commentS
about the
results
obtained
in
this
experiment.
4
Explain,
in details,
why it is necessary to
starting
use
7 - 3
resistance ?
Why
it
is not possible to start the
c.
series
motor
without load ?
6
Which
perferabl
( d.
c. shunt or d. c. series motor ) to
be
used
in places require high starting
torque
?
your
prove
answer.
Transcribed Image Text:Report : 1 - For experiment A : a ) Plot on the same graph sheet the torque ( × - axis ) against the speed (y - axis ) for different values of I e1 b) Calculate the efficiency of the d. c. motor for each step and then plot the set of curves ( efficiency ) y - axis against I, ( x - axis ) on the same graph sheet. 2 - For experiment B : a ) Repeat 1 - a for different values of Re1 b ) Repeat 1 - b. 3 Give your commentS about the results obtained in this experiment. 4 Explain, in details, why it is necessary to starting use 7 - 3 resistance ? Why it is not possible to start the c. series motor without load ? 6 Which perferabl ( d. c. shunt or d. c. series motor ) to be used in places require high starting torque ? your prove answer.
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