Dear candidates you will find MCQ questions of Fluid Mechanics and Machinery here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: the standard symbol for darcy friction factor is fd. darcy friction factor in fluid mechanics deals with fractions of pressure losses. this is due to the development of friction in the pipe.
Explanation: fanning friction factor is 0.25 times darcy friction factor. fanning friction factor in fluid mechanics deals fraction of pressure losses due to friction in the pipe.
Explanation: the standard symbol for froude number is fr. froude number in fluid mechanics deals with wave and surface behaviour of fluid particles. this is with the ratio of body’s inertia to gravitational forces.
Explanation: the formula for knudsen number is λ⁄l. knudsen number in fluid mechanics deals with gas dynamics. it is defined as the ratio of the molecular mean free path length to the representative scale length.
Explanation: the principle of fluid mechanics works on the utilization of useful work. the working is based on the force exerted by a fluid jet striking the surface and moving over a series of vanes about its axis.
Explanation: force exerted by a jet on a moving plate happens in three cases. the three cases are classified depending on their
Explanation: the force analysis on a curved vane is understood using clearly using the study of velocity triangles. there are two types of velocity triangles, inlet velocity triangle and outlet velocity triangle.
Explanation: jet propulsion works on the principle of newton’s third law. newton’s third law states that for every action, there is an equal and opposite reaction. thus, the correct option is newton’s third law.
Explanation: in a jet propulsion, v1 stands for absolute velocity at the inlet. the main
Explanation: the relative velocity of the jet is denoted as vr1. it is the relative velocity at the inlet to the vane. relative velocity of inlet to the vane is obtained by subtracting vectorially the velocity of the vane with its absolute velocity.
Jump to