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+// Example 5.8
+// Determine (a) Expected minimum locked-rotor torque (b) Repeat (a) when 
+// voltage and frequency dropped to 230V and 58Hz  
+// Page No. 193
+
+clc;
+clear;
+close;
+
+// Given data
+HPrated=75;            // Rated horsepower
+nrated=1750;           // Rated speed
+V1=240;                // Rated voltage
+V2=230;                // Voltage after drop
+F1=60;                 // Rated frequency
+F2=58;                 // Frequency after drop
+
+// (a) Expected minimum locked-rotor torque
+Trated=5252*HPrated/nrated;   // Rated torque
+Tlr=Trated*1.2;               // Minimum locked-rotor torque is 120% rated 
+
+// (b) Expected minimum locked-rotor torque when voltage and frequency dropped 
+// to 230V and 58Hz  
+Tlr2=Tlr*((V2/F2)^2)*((F1/V1)^2);
+
+// Display result on command window
+printf("\n Expected minimum locked-rotor torque = %0.0f lb-ft",Tlr);
+printf("\n Expected minimum locked-rotor torque after drop = %0.0f lb-ft",Tlr2);
+