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MCQs 1: Two dimensional flow occurs when___________________?

the direction and magnitude of the velocity at all points are identical the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time the magnitude and direction of the velocity do not change from point to point in the fluid the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane velocity, depth, pressure, etc. change from point to point in the fluid flow
Answer Explanation

MCQs 2: All the terms of energy in Bernoulli’s equation have dimension of_______________?

energy work mass length time
Answer Explanation

MCQs 3: The fluid forces considered in the Navier Stokes equation are__________________?

gravity, pressure and viscous gravity, pressure and turbulent pressure, viscous and turbulent gravity, viscous and turbulent none of the above
Answer Explanation

MCQs 4: For pipes, laminar flow occurs when Roynolds number is__________________?

less than 2000 between 2000 and 4000 more than 4000 less than 4000 none of the above
Answer Explanation

MCQs 5: At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?

minimum maximum zero negative value could be any value
Answer Explanation

MCQs 6: Two pipe systems can be said to be equivalent, when the following quantites are same______________?

friction loss and flow length and diameter flow and length friction factor and diameter velocity and diameter
Answer Explanation

MCQs 7: In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

maximum minimum zero non-zero finite unpredictable
Answer Explanation

MCQs 8: Select the correct statement___?

Local atmospheric pressure depends upon elevation of locality only Standard atmospheric pressure is the mean local atmospheric pressure a* sea level Local atmospheric pressure is always below standard atmospheric pressure A barometer reads the difference be-tween local and standard atmospheric pressure Gauge piessure is equal to atmospheric pressure plus instrument reading
Answer Explanation

MCQs 9: Choose the wrong statement_?

The center of buoyancy is located at the center of gravity of the displaced liquid For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy All floating bodies are stable
Answer Explanation

MCQs 10: Choose the wrong statement__?

any weight, floating or immersed in a liquid, is acted upon by a buoyant force Buoyant force is equal to the weight of the liquid displaced The point through which buoyant force acts, is called the center of buoyancy Center of buoyancy is located above the center of gravity of the displaced liquid v Relative density of liquids can be determined by means of the depth of flotation of hydrometer
Answer Explanation

MCQs 11: Choose the wrong statement___?

fluids are capable of flowing fluids conform to the shape of the con-taining vessels when in equilibrium, fluids cannot sustain tangential forces when in equilibrium, fluids can sustain shear forces fluids have some degree of compressibility and offer little resistance to form
Answer Explanation

MCQs 12: Choose the wrong statement________________?

Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force Viscosity is due primarily to interaction between fluid molecules Viscosity of liquids decreases with in-crease in temperature Viscosity of liquids is appreciably affected by change in pressure Viscosity is expressed as poise, stoke, or saybolt seconds
Answer Explanation

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