The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will_______________?
(A) increase
(B) remain unaffected
(C) may increase or decrease depending on the characteristics of liquid
(D) decrease
(D) unpredictable
The units of dynamic or absolute viscosity are_______________?
(A) metres2 per sec
(B) kg sec/meter
(C) newton-sec per meter
(D) newton-sec2 per meter
(D) none of the above
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called_________________?
(A) surface tension
(B) co-efficient of viscosity
(C) viscosity
(D) osmosis
(D) cohesion
To avoid an interruption in the flow of a syphon, an air vessel is provided______________?
(A) at the inlet
(B) at the outlet
(C) at the summit
(D) ay nay point between inlet and outlet
(D) none of the above
If the surface of liquid is convex, men_________________?
(A) cohesion pressure is negligible
(B) cohesion pressure is decreased
(C) cohesion pressure is increased
(D) there is no cohesion pressure
(D) none of the above
Rain drops are spherical because of____________________?
(A) viscosity
(B) air resistance
(C) surface tension forces
(D) atmospheric pressure
(D) none of the above
The angle of contact in case of a liquid depends upon____________________?
(A) the nature of the liquid and the solid
(B) the material which exists above the free surface of the liquid
(C) both of die above
(D) any one of the above
(D) none of die above
The center of gravity of the volume of the liquid displaced by an immersed body is called________________?
(A) meta-center
(B) center of pressure
(C) center of buoyancy
(D) center of gravity
(D) none of the above
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its_______________?
(A) specific weight
(B) specific mass
(C) specific gravity
(D) specific density
(D) none of the above
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than_______________?
(A) 2.4 m above the hydraulic gradient
(B) 6.4 m above the hydraulic gradient
(C) 10.0 m above the hydraulic gradient
(D) 5.0 above the hydraulic gradient
(D) none of the above