diff options
Diffstat (limited to '1938/CH2/EX2.29')
| -rwxr-xr-x | 1938/CH2/EX2.29/2_29.jpg | bin | 0 -> 121525 bytes | |||
| -rwxr-xr-x | 1938/CH2/EX2.29/2_29.sce | 17 |
2 files changed, 17 insertions, 0 deletions
diff --git a/1938/CH2/EX2.29/2_29.jpg b/1938/CH2/EX2.29/2_29.jpg Binary files differnew file mode 100755 index 000000000..5f7cf0402 --- /dev/null +++ b/1938/CH2/EX2.29/2_29.jpg diff --git a/1938/CH2/EX2.29/2_29.sce b/1938/CH2/EX2.29/2_29.sce new file mode 100755 index 000000000..44e0c0466 --- /dev/null +++ b/1938/CH2/EX2.29/2_29.sce @@ -0,0 +1,17 @@ +clc,clear
+printf('Example 2.29\n\n')
+
+V=230,I_a0=3.3
+R_a=0.3,R_sh=160 //armature and shunt field resistance
+I_L1=40,N_0=1000
+E_b0 = V - I_a0*R_a
+I_sh=V/ R_sh
+I_a1 = I_L1 - I_sh
+E_b1 = V - I_a1*R_a
+phi1_by_phi0= 1- (4/100) //weakening by 4 percent
+
+N_1 = N_0 *(E_b1/E_b0)/(phi1_by_phi0) //because N (prop.) E_b/phi
+printf('Full load speed is %.4f rpm\n',N_1)
+T_0 = E_b0*I_a0/(2*%pi*N_0/60)
+T_1 = T_0*(I_a1/I_a0)*phi1_by_phi0 // because T (prop.) phi*I_a
+printf('Full load developed torque is %.4f N-m',T_1)
|
