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.Management Sciences
Category: Fluid Mechanics
The specific weight of water is 1000 kg/m”_________________?
A. at normal pressure of 760 mm
B. at 4°C temperature
C. at mean sea level
D. all the above
E. none of the above
According to Bernoulli’s equation for steady ideal fluid flow____________________?
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
E. none of the above
Cavitation will begin when__________________?
A. the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
B. pressure becomes more than critical pressure
C. flow is increased
D. pressure is increased
E. none of the above
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is____________________?
A. 2.4 m
B. 3.0 m
C. 4.0 m
D. ”2.5 m
E. 5.0 m
Center of pressure on an inclined plane is___________________?
A. at the centroid
B. above the centroid
C. below the centroid
D. at metacentre
E. at center of pressure
The vapour pressure over the concave surface is______________________?
A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
E. none of the above
Which of the following manometer has highest sensitivity_________________?
A. U-tube with water
B. inclined U-tube
C. U-tube with mercury
D. micro-manometer with water
E. displacement type
Principle of similitude forms the basis of_________________?
A. comparing two identical equipments
B. designing models so that the result can be converted to prototypes
C. comparing similarity between design and actual equipment
D. hydraulic designs
E. performing acceptance tests
For a body floating in a liquid the normal pressure exerted by the liquid acts at ____________________?
A. bottom surface of the body
B. e.g. of the body
C. metacentre
D. all points on the surface of the body
E. all of the above
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called_______________?
A. upthrust
B. reaction
C. buoyancy
D. metacentre
E. center of pressure
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