diff options
Diffstat (limited to '3640/CH4/EX4.9')
| -rw-r--r-- | 3640/CH4/EX4.9/Ex4_9.sce | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/3640/CH4/EX4.9/Ex4_9.sce b/3640/CH4/EX4.9/Ex4_9.sce new file mode 100644 index 000000000..d510355b5 --- /dev/null +++ b/3640/CH4/EX4.9/Ex4_9.sce @@ -0,0 +1,24 @@ +clc
+vtap=0.8 //percantage voltage tap of compensator
+hp=100 //rating of motor in horsepower,I hp=746 watts
+n=1750 //rated speed of motor in rev/min
+a=1/vtap //compensator turns ratio
+V=2300 //voltage rating of induction motor in volts
+I1=150 //current rating in amperes
+mprintf("a=%f\n",a)
+mprintf("Voltage applied at starting of motor=%fV\n",V/a)
+I1start=I1/a
+mprintf("I1start=(1840/2300)*150A=150/a=%fA\n",I1start)
+IL=I1start/a
+mprintf("IL=I1start/a=%fA\n",IL)
+tfl=hp*5252/n
+mprintf("τfl=(hp*5252)/(rev/min)=%flb-ft\n",tfl)//ans may vary due to roundoff error
+t=1.2*tfl //120 percent of the full load torque in lb-ft
+mprintf("τst=360/a*a=%flb-ft\n",t/(a*a))//ans may vary due to roundoff error
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