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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
Buckingham-π theorem states that in any physical problem including ‘n’ quantities having ‘m’ dimensions, the quantities can be arranged into _____________ independent dimensionless parameters? A. m B. nC. n-m D. n/m
When the head pumped against is less than the head of the fluid used for pumg, the usual device is a/an______________________? A. Ejector B. Blower C. InjectorD. Airlift
The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is___________________? A. √(HW/π)B. HW/2 (H + W)2 C. HW/4 (H + W)2 D. 2HW/(H + W)
Permanent pressure loss in a well designed Venturimeter is about _____________ percent of the venturi differential? A. 1B. 10 C. 30 D. 50
For an ideal fluid flow, Reynolds number is___________________? A. 2100 B. 100 C. 0D. ∞
Unit of mass velocity is__________________? A. kg/hrB. kg/m2. hr C. kg/m2 D. kg/m3. hr
The lift of a balloon is_________________? A. Increased, as it rises to a higher altitudeB. Due to the weight of the atmospheric air, that it displaces C. Not dependent on the temperature of the atmosphere D. None of these
The most economical flow control valve for use with large diameter pipes is a__________________? A. Butterfly valve B. Globe valve C. Needle valve D. None of these
The equivalent diameter for fluid flow through square cross section channel of side ‘x’, for pressure drop calculation purpose is given by____________________? A. 4x B. 2xC. x D. √x