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// ELECTRICAL MACHINES
// R.K.Srivastava
// First Impression 2011
// CENGAGE LEARNING INDIA PVT. LTD
// CHAPTER : 7 : SPECIAL MOTORS AND INTRODUCTION TO GENERALIZED MACHINE THEORY
// EXAMPLE : 7.9
clear ; clc ; close ; // Clear the work space and console
// GIVEN DATA
E2 = 100; // Per phase standstill EMF in Volts
Z2s = 0.025 + %i*0.08; // Rotor circuit impedance at standstill
E = 50; // Injected EMF in Volts
// CALCULATIONS
I2 = 0; // Assuming Current is zero
s1 = (E/E2)+(I2*Z2s)/E2; // Slip when injected EMF is opposite to the E2
s2 = (-E/E2)+(I2*Z2s)/E2; // Slip when injected EMF is phase with E2
// DISPLAY RESULTS
disp("EXAMPLE : 7.9: SOLUTION :-");
printf("\n (a) Slip when injected EMF is opposite to the E2, s = %.1f \n",s1)
printf("\n (b) Slip when injected EMF is phase with E2, s = %.1f \n",s2)
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