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A. principle of conservation of mass holds

B. velocity and pressure are inversely proportional

C. total energy is constant throughout

D. the energy is constant along a stream-line but may vary across streamlines

A. supersonics, as with projectiles and jet propulsion

B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls

D. all of fhe above

A. keeps on increasing

B. keeps on decreasing

C. remains constant

D. may increase/decrease

A. friction loss and flow

B. length and diameter

C. flow and length

D. friction factor and diameter

A. maximum

B. minimum

C. zero

D. non-zero finite

A. Local atmospheric pressure depends upon elevation of locality only

B. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level

C. Local atmospheric pressure is always below standard atmospheric pressure

D. A barometer reads the difference be-tween local and standard atmospheric pressure

A. The center of buoyancy is located at the center of gravity of the displaced liquid

B. For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy

C. If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions

D. All floating bodies are stable

A. fluids are capable of flowing

B. fluids conform to the shape of the con-taining vessels

C. when in equilibrium, fluids cannot sustain tangential forces

D. when in equilibrium, fluids can sustain shear forces

A. Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force

B. Viscosity is due primarily to interaction between fluid molecules

C. Viscosity of liquids decreases with in-crease in temperature

D. Viscosity of liquids is appreciably affected by change in pressure