Hydraulics and Fluid Mechanics in ME The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet) (1 - sin φ)/2 (1 + cos φ)/2 (1 + sin φ)/2 (1 - cos φ)/2 (1 - sin φ)/2 (1 + cos φ)/2 (1 + sin φ)/2 (1 - cos φ)/2 ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The flow ratio of Francis turbine is defined as the ratio of the Velocity of runner at inlet to the velocity of flow at inlet None of these Velocity of flow at inlet to the theoretical jet velocity Theoretical velocity of jet to the velocity of flow at inlet Velocity of runner at inlet to the velocity of flow at inlet None of these Velocity of flow at inlet to the theoretical jet velocity Theoretical velocity of jet to the velocity of flow at inlet ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The velocity at which the flow changes from laminar flow to turbulent flow is called Super-sonic velocity Velocity of approach Sub-sonic velocity Critical velocity Super-sonic velocity Velocity of approach Sub-sonic velocity Critical velocity ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice) Q = Cd × bH × √(2gh) Q = Cd × bH2 × √(2gh) Q = Cd × b (H2 - H1) × √(2gh) Q = Cd × bH₁ × √(2gh) Q = Cd × bH × √(2gh) Q = Cd × bH2 × √(2gh) Q = Cd × b (H2 - H1) × √(2gh) Q = Cd × bH₁ × √(2gh) ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film) μπ²NR³/60t μπ²NR²/60t μπ²NR/60t μπ²NR⁴/60t μπ²NR³/60t μπ²NR²/60t μπ²NR/60t μπ²NR⁴/60t ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The velocity corresponding to Reynold number of 2000 is called Higher critical velocity Super-sonic velocity Lower critical velocity Sub-sonic velocity Higher critical velocity Super-sonic velocity Lower critical velocity Sub-sonic velocity ANSWER DOWNLOAD EXAMIANS APP
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