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RRB RPF RPSF SI and CONS Model Papers 2 with solutions
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© examsnet.com
Question : 35
Total: 120
Water flows at the rate of 10 metres per minute from a cylindrical pipe 5 mm in diameter. How long it lake to fill up a conical vessel whose diameter at the base is 30 cm and depth 24 cm?
28 minutes 48 seconds
51 minutes 12 seconds
51 minutes 24 seconds
28 minutes 36 seconds
Validate
Solution:
(a) Volume of water flowing from the pipe in 1 minute
=
π
×
0.25
×
0.25
×
1000
cu.cm.
Volume of conical vessel
=
1
3
π
×
15
×
15
×
24
cu.cm.
∴ Required time
=
π
×
15
×
15
×
24
3
π
×
0.25
×
0.25
×
1000
= 28 minutes 48 seconds
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