For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to

August 13, 2022 – by admin

Question: For flow past a flat plate, if x is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to [A]. x [B]. 1/x [C]. x [D]. 1/x Answer: Option A Explanation: No…

With increasing flow rate, the hydraulic efficiency of a centrifugal pump

August 13, 2022 – by admin

Question: With increasing flow rate, the hydraulic efficiency of a centrifugal pump [A]. monotonically decreases. [B]. decreases and then increases. [C]. remains constant. [D]. increases and then decreases. Answer: Option A Explanation: No answer description available for this question.

A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is

August 13, 2022 – by admin

Question: A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1…

A free jet of water of cross-sectional area 0.01m2 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

August 13, 2022 – by admin

Question: A free jet of water of cross-sectional area 0.01m2 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…

A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m3 ) is to be fluidised by water (density 1000 kg/m3 ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is

August 13, 2022 – by admin

Question: A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m3 ) is to be fluidised by water (density 1000 kg/m3 ). If at the point of incipient fluidisation, the bed voidage is…

For laminar flow of a fluid through a packed bed of spheres of diameter d, the pressure drop per unit length of bed depends upon the sphere diameter as

August 13, 2022 – by admin

Question: For laminar flow of a fluid through a packed bed of spheres of diameter d, the pressure drop per unit length of bed depends upon the sphere diameter as [A]. d [B]. d2 [C]. d4 [D]. Answer: Option D…

Boiler feed water pump is usually a __________ pump.

August 13, 2022 – by admin

Question: Boiler feed water pump is usually a __________ pump. [A]. reciprocating [B]. gear [C]. multistage centrifugal [D]. diaphragm Answer: Option C Explanation: No answer description available for this question.

In the low Reynolds number region, the drag force on a sphere is proportional to

August 13, 2022 – by admin

Question: In the low Reynolds number region, the drag force on a sphere is proportional to [A]. V [B]. V2 [C]. V4 [D]. V0.5 Answer: Option A Explanation: No answer description available for this question.

For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to

August 13, 2022 – by admin

Question: For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to [A]. R [B]. R2 [C]. R4 [D]. R0.5 Answer: Option C Explanation: No…

A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity

August 13, 2022 – by admin

Question: A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity…