From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1938/CH2/EX2.14/2_14.sce | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100755 1938/CH2/EX2.14/2_14.sce (limited to '1938/CH2/EX2.14/2_14.sce') diff --git a/1938/CH2/EX2.14/2_14.sce b/1938/CH2/EX2.14/2_14.sce new file mode 100755 index 000000000..cf610f216 --- /dev/null +++ b/1938/CH2/EX2.14/2_14.sce @@ -0,0 +1,24 @@ +clc,clear +printf('Example 2.14\n\n') + +R_a=0.08, E_b1=242 , V=250 +//part(i) +I_a1= (V-E_b1)/R_a +printf('(i)Armature current = %.0f A',I_a1) + +//part(ii) +N=0 +E_b=0 //because N=0 +I_a_start=V/R_a +printf('\n(ii)Starting armature current = %.0f A',I_a_start) + +//part(iii) +I_a2=120 +E_b2=V-I_a2*R_a +printf('\n(iii)Back emf if armature current is changed to 120 A= %.1f V',E_b2) + +//part(iv) +I_a=87,N_m=1500 +E_g=V + I_a*R_a //induced emf +N_g=N_m*(E_g/E_b1)//as E (prop.) N +printf('\n(iv)Generator speed to deliver 87 A at 250 V = %.1f rpm',N_g) -- cgit