InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Evaluate after rationalising the denomena tooof 25VF-V80'To = 3.162.Eit being given that Vs=2236 and |
|
Answer» 25/√40-√80=25/2√10-4√5=25/2(√10-2√5)=25(√10+2√5)/2(√10-2√5)(√10+2√5)=25(√10+2√5)/2(10-20)=-25(√10+2√5)/20=-5(√10+2√5)/4=-5(3.162+2×2.236)/4=-5(3.162+4.472)/4=-5×7.634/4=-5×1.9085=-9.5425 25/√40-√80=25/2√10-4√5=25/2(√10-2√5)=25(√10+2√5)/2(√10-2√5)(√10+2√5)=25(√10+2√5)/2(10-20)=-25(√10+2√5)/20=-5(√10+2√5)/4=-5(3.162+2×2.236)/4=-5(3.162+4.472)/4=-5×7.634/4=-5×1.9085=-9.5425 |
|