Hydraulics and Fluid Mechanics in ME The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to 0.001 0.0001 0.1 0.01 0.001 0.0001 0.1 0.01 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 μπ²NR/60t μπ²NR⁴/60t μπ²NR²/60t μπ²NR³/60t μπ²NR/60t μπ²NR⁴/60t μπ²NR²/60t ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid) None of the listed here ρ/K K.ρ K/ρ None of the listed here ρ/K K.ρ K/ρ ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In a reaction turbine, the draft tube is used To prevent air to enter the turbine To transport water to downstream To increase the head of water by an amount equal to the height of the runner outlet above the tail race To run the turbine full To prevent air to enter the turbine To transport water to downstream To increase the head of water by an amount equal to the height of the runner outlet above the tail race To run the turbine full ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called Positive gauge pressure Absolute pressure Vacuum pressure Gauge pressure Positive gauge pressure Absolute pressure Vacuum pressure Gauge pressure ANSWER DOWNLOAD EXAMIANS APP
Hydraulics and Fluid Mechanics in ME In order to avoid cavitation in centrifugal pumps The delivery pressure should be high The suction pressure should be high The suction pressure should be low The delivery pressure should be low The delivery pressure should be high The suction pressure should be high The suction pressure should be low The delivery pressure should be low ANSWER DOWNLOAD EXAMIANS APP
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