If the energy present in a jet of water of 20 cm diameter and having a velocity of 25 m/s could be extracted by a device with 90% efficiency, the power extracted would be nearly \(\left( {taking\frac{1}{{2g}} = 0.051\frac{{\sec 2}}{m}} \right)\)

If the energy present in a jet of water of 20 cm diameter and having a

1.	If the energy present in a jet of water of 20 cm diameter and having a velocity of 25 m/s could be extracted by a device with 90% efficiency, the power extracted would be nearly \(\left( {taking\frac{1}{{2g}} = 0.051\frac{{\sec 2}}{m}} \right)\)
A.	180 kW
B.	255 kW
C.	260 kW
D.	300 kW
Answer» C. 260 kW

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If the energy present in a jet of water of 20 cm diameter and having a velocity of 25 m/s could be extracted by a device with 90% efficiency, the power extracted would be nearly \(\left( {taking\frac{1}{{2g}} = 0.051\frac{{\sec 2}}{m}} \right)\)

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