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Diffstat (limited to '3871/CH8/EX8.10')
| -rw-r--r-- | 3871/CH8/EX8.10/Ex8_10.sce | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/3871/CH8/EX8.10/Ex8_10.sce b/3871/CH8/EX8.10/Ex8_10.sce new file mode 100644 index 000000000..d264b82df --- /dev/null +++ b/3871/CH8/EX8.10/Ex8_10.sce @@ -0,0 +1,25 @@ +//===========================================================================
+//chapter 8 example 10
+
+clc;clear all;
+
+//variable declaration
+V = 230; //voltage in V
+I = 10; //current in A
+T = 30; //time in minutes
+x =0.8; //power factor
+n = 890; //number of revolutions made
+M = 1200; //meter constant in revolutions per kWh
+E = 58.25; //dial reading at the end of test
+E1 = 57.35; //dial reading at the start of test
+
+//calculations
+Ea = (V*I*(T/(60))*x)/(1000); //Energy consumed 1 minute
+Em = E-E1; //energy consumption recorded by the meter in kWh
+e = Em-Ea; //error in registration in kWh
+N = M*Em; //actual revolutions required to be made by the meter for an energy consumption of 0.90kWh
+e = (n-N)/(T); //error in rpm
+
+//result
+mprintf("error = %3.2f rpm",e);
+
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