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AP and TS EAMCET Engineering 2020 Model Paper 1
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© examsnet.com
Question : 95
Total: 160
Liquid is flow ing through two tubes of length L and 3L and radius r and 3r respectively which are connected in series. The pressure difference across first and second tube are in the ratio
3:1
1:3
27:1
9:1
Validate
Solution:
As tubes are in series, rate of flow will be same
Q
=
π
∆
P
1
r
4
8
η
L
=
π
∆
P
2
(
3
r
)
4
8
η
3
L
⇒
∆
P
1
∆
P
2
=
81
3
=
27
© examsnet.com
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