Fluid Mechanics and Hydraulic Machines MCQs | Page - 7

Q. 61) The condition for maximum transmission of power through a pipeline is that one-third of the available head must be consumed in friction. The corresponding efficiency of the pipeline is

Q. 62) For achieving continuous flow through a system, no position of the pipe should be higher than

Q. 63) For turbulent flow in smooth pipes, the entrance length is taken as

Q. 64) The entrance length or length of establishment of flow is

Q. 65) Due to which of the following phenomena water hammer is caused?

Q. 66) Under which of the following conditions the closure of valve is considered rapid? (where L = length of pipe, C = velocity of pressure wave produced due to water hammer.)

Q. 67) The force exerted by a jet of water on a moving vertical plate, in the direction of motion of plate is given by

Q. 68) When a steady jet impinges on a fixed inclined surface

Q. 69) For maximum efficiency of a series of curved vanes, the speed is

Q. 70) The efficiency of jet propulsion with inlet orifices at right angles to the direction of motion of ship is given by