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.Management Sciences
Category: Fluid Mechanics for Chemical
A globe valve is the most suitable for applications, in which____________________?
A. Fluid flow control is required
B. Fluid contains dispersed solid particles
C. Valve is required to be either fully open or fully closed
D. One way flow is required
_____________ forces act on a particle moving through a stationary fluid?
A. Gravity
B. Drag
C. Buoyant
D. All A., B., & C.
For an unstable equilibrium of a floating body (where, M = metacentre.) ?
A. M is above G
B. M is below G
C. M & G coincide
D. None of these
Weber number is the ratio of inertial force to _____________ force?
A. Surface tension
B. Gravity
C. Viscous
D. Elastic
Location of vena-contracta in an orificemeter does not depend upon the________________?
A. Type of orifice
B. Density, viscosity & compressibility of the fluid
C. Ratio of pipe diameter to orifice diameter
D. Pipe roughness
A special type of liquid transporting device is the diffuser pump, in which _____________ are minimised?
A. Bearing losses
B. Disk friction
C. Shock losses
D. Cavitation
What is the unit of kinematic viscosity in SI unit ?
A. M2/sec
B. N/m2. sec
C. Kg. sec/m
D. None of these
For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is _______________?
A. More
B. Less
C. Equal
D. More or less, depending on the type of particle
At a constant speed of the centrifugal pump, it‟s _____________ the impeller diameter?
A. Capacity varies directly with
B. Head varies as the square of
C. Horsepower varies as the cube of
D. All A., B. and C.
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