diff options
Diffstat (limited to '3835/CH8/EX8.8')
-rw-r--r-- | 3835/CH8/EX8.8/Ex8_8.sce | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/3835/CH8/EX8.8/Ex8_8.sce b/3835/CH8/EX8.8/Ex8_8.sce new file mode 100644 index 000000000..e66d45789 --- /dev/null +++ b/3835/CH8/EX8.8/Ex8_8.sce @@ -0,0 +1,33 @@ +clear +// +//case a slip +f=50 +p=4 +ns=(120*f)/p //synchronous speed +printf("\n %0.1f",ns) +n=1440 +s=(1500-1440)/(1500) +printf("\n slip= %e pu",s) +//case b rotor resistance loss +pd=25 //power developed +ml=1 //mechanical losses +pm=pd+ml //The total mechanical power developed +pag=pm/(1-s) +rl=s*pag +printf("\n rotor resistance loss= %0.1f kw",rl) +//case c the total input if stator losses are 1.75 kw +sl=1.75 //stator loss +ti=pag+sl +printf("\n total input= %0.1f kw",ti) +//case d efficiency +e=(pd*100)/ti +printf("\n %0.3f ",e) +//case e line current +pf=0.85 //power factor +e1=440 +l=(ti*1000)/((3**0.5)*e1*pf) +printf("\n line current= %0.1f A",l) +//case f +fr=s*f +n=fr*60 +printf("\n The number of complete cycles of the rotor emf per minute is= %0.0f ",n) |