The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

Related MCQs

• For laminar flow in circular pipes, the Darcy’s friction factor f is equal to
• For pipes, turbulent flow occurs when Reynolds number is
• A liquid flows through pipes 1 and 2 with the same flow velocity. If the ratio of their pipe diameters d1 : d2 be 3:2, what will be the ratio of the head loss in the two pipes?
• A liquid flowss through two similar pipes 1 and 2. If the ratio of their flow velocities v1 : v2 be 2:3, what will be the ratio of the head loss in the two pipes?
• A liquid flows with the same velocity through two pipes 1 and 2 having the same diameter. If the length of the second pipe be twice that of the first pipe, what should be the ratio of the head loss in the two pipes?
• For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is
• Head lost due to friction is given by k*f*L*v*v/D*2g where f- friction coefficient, L- length of pen stock, D- diameter of penstock and” k” is constant and its value is  
• For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be
• What is the effect of change in Reynold’s number on friction factor in turbulent flow?
• The friction factor in fluid flowing through pipe depends upon