Fluid Mechanics

Question: Glass pipes can be joined by [A]. flanges [B]. welding [C]. soldering [D]. bell and spigot joint Answer: Option D Explanation: No answer description available for this question.

Question: Check valves are used [A]. at high pressure. [B]. in bends. [C]. for controlling water flow. [D]. for unidirectional flow. Answer: Option D Explanation: No answer description available for this question.

Question: Most commonly used joint in the underground pipe lines is the [A]. sleevejoint [B]. coupling [C]. flange [D]. expansion joint Answer: Option A Explanation: No answer description available for this question.

Question: A pitched-blade turbine draws __________ a straight blade turbine. [A]. less power than [B]. more power than [C]. same power as [D]. data insufficient to predict Answer: Option A Explanation: No answer description available for this question.

Question: Froude number is not a factor [A]. for Reynolds number greater than 300. [B]. when there is no vortex formation. [C]. for unbaffled tank. [D]. none of these. Answer: Option B Explanation: No answer description available for this question.

Question: Froude number is the ratio of [A]. shear stress to gravitational stress. [B]. drag stress to shear stress. [C]. inertial stress to shear stress. [D]. inertial stress to gravitational stress. Answer: Option D Explanation: No answer description available for this question.

Question: With increase in the temperature, viscosity of a liquid [A]. increases [B]. decreases [C]. remains constant [D]. may increase or decrease; depends on the liquid Answer: Option B Explanation: No answer description available for this question.

Question: Baffles in mixing tanks are provided to [A]. reduce swirling and vortex formation. [B]. increase the structural strength of the tank. [C]. aid in rotational flow. [D]. none of these Answer: Option A Explanation: No answer description available for this question.

Question: Dimension of kinematic viscosity is [A]. MLT-1 [B]. L2 . T-1 [C]. L2T [D]. L2 . T-2 Answer: Option B Explanation: No answer description available for this question.

Question: A centrifugal pump is used to pump water through a horizontal distance of 150 m, and then raised to an overhead tank 10 m above. The pipe is smooth with an I.D of 50 mm. What head (m of water) must the pump generate at its exit (E) to deliver water at a flow…