A venturimeter of 20 mm throat diameter is used to measure the velocity of water in a horizontal pipe of 40 mm diameter. If the pressure difference between the pipe and throat sections is found to be 30 kPa, then, neglecting frictional losses, the flow velocity is
1
0.2 m/sec
2
1.0 m/sec
3
1.4 m/sec
4
2.0 m/sec
5
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