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.Management Sciences
Category: Hydraulics and Fluid Mechanics
The specific weight of water is 1000 kg/m” _______________?
A. at norma] pressure of 760 mm
B. at 4°C temperature
C. at mean sea level
D. all the above
E. none of the above.
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the______________?
A. force of adhesion
B. force of cohesion
C. force of friction
D. force of diffusion
E. none of die above
Cavitation is caused by___________________?
A. high velocity
B. high pressure
C. weak material
D. low pressure
E. low viscosity
The resultant of all normal pressures acts_________________?
A. at e.g. of body
B. at center of pressure
C. vertically upwards
D. at metacentre
E. vertically downwards
The equation of continuity holds good when the flow __________________?
A. is steady
B. is one dimensional
C. velocity is uniform at all the cross sec-tions
D. all of the above
E. none of the above
Center of buoyancy is the___________________?
A. centroid of the displaced volume of fluid
B. center of pressure of displaced volume
C. e.g. of floating ‘body
D. does not exist
E. none of the above
The value of mass density in kgsecVm4 for water at 0°C is_______________?
A. 1
B. 1000
C. 100
D. 101.9
E. 91
The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to________________?
A. 1 Pa
B. 91Pa
C. 981 Pa
D. 9810 Pa
E. 98,100 Pa
The atmospheric pressure with rise in altitude decreases____________________?
A. linearly
B. first slowly and then steeply
C. first steeply and then gradually
D. unpredictable
E. none of the above
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