Fluid Mechanics MCQs

Chemical Engineering Objective Questions

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295. Drag is the force component exerted on an immersed object,

A. Passing the centroid of the body at 60°to the direction of motion

B. The component being parallel to theflow direction

C. The component being normal to the flow direction

D. None of these

296. In case of a pipe exit fitted with a nozzle, the

A. Conversion of kinetic head to pressure head is facilitated

B. Conversion of pressure head to kinetic head is facilitated

C. Power transmitted through the nozzle is maximum, when the head lost due to friction in the pipe is equal to one third of the total supply head

D. Both B and C

297. Reynolds number is the ratio of

A. Viscous forces to gravity forces

B. Inertial forces to viscous forces

C. Viscous forces to inertial forces

D. Inertial forces to gravity forces

298. The valve used for very remote and accurate control of fluid is a __________ valve.

299. The terminal velocity of a particle moving through a fluid varies as d_pⁿ. What is the value of 'n' for Newton's law regime?

300. Absolute viscosity of a fluid is a function of the __________ of the fluid.

B. Pressure & temperature

C. Shearing stress

301. A free jet of water of cross-sectional area 0.01 m² and a velocity of 20 m/s strikes a plate and then flows in a plane parallel to the plate as shown in the figure below. The horizontal component of the force on the support is

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