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diff --git a/2192/CH3/EX3.4/3_4.sce b/2192/CH3/EX3.4/3_4.sce
new file mode 100755
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+++ b/2192/CH3/EX3.4/3_4.sce
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+clc,clear
+printf('Example 3.4\n\n')
+
+//given values
+I_l1=20
+V=400
+N_1=500
+
+//case 2
+//N (prop.) E/phi  and E is same in both cases because of negligible losses
+//phi (prop.) I_se  .. using I_se1= I_l1 and I_se2=I_l2/2
+//N2_by_N1 = 2*I_l1/I_l2                                                      (i)
+
+// Torque (prop.) square of speed
+//T2_by_T1= (N2_by_N1)^2                                                      (ii)
+
+//torque (prop.) flux*I_a
+//T2_by_T1=I_l2^2/(2*I_l1*I_l1)                                               (iii)
+
+
+//substituting values of (i) (iii) in (ii)
+I_l2 = ((2*I_l1)^2  *  (2*I_l1*I_l1))^0.25
+N_2 = N_1*((2*I_l1)/I_l2)   //from (i)
+
+printf('Required current and speed of motor are %.2f A and %.1f r.p.m respectively',I_l2,N_2)