Falling drops of water become spheres due to the property of ________________?
A. adhesion
B. cohesion
C. surface tension
D. viscosity
E. compressibility
Hydraulics and Fluid Mechanics
Free surface of a liquid tends to contract to the smallest possible area due to force of _________________?
Free surface of a liquid tends to contract to the smallest possible area due to force of _________________?
A. surface tension
B. viscosity
C. friction
D. cohesion
E. adhesion
Specific weight of sea water is more that of pure water because it contains ________________?
Specific weight of sea water is more that of pure water because it contains ________________?
A. dissolved air
B. dissolved salt
C. suspended matter
D. all of the above
E. heavy water
Alcohol is used in manometers because_____________________?
Alcohol is used in manometers because_____________________?
A. it has low vapour pressure
B. it is clearly visible
C. it has low surface tension
D. it can provide longer column due to low density
E. is provides suitable meniscus
Which of the following is the unit of kinematic viscosity _________________?
Which of the following is the unit of kinematic viscosity _________________?
A. pascal
B. poise
C. stoke
D. faraday
E. none of the above
The ratio of absolute viscosity to mass density is known as____________________?
The ratio of absolute viscosity to mass density is known as____________________?
A. specific viscosity
B. viscosity index
C. kinematic viscosity
D. coefficient of viscosity
E. coefficient of compressibility
The density of water is 1000 kg/m3 at __________________?
The density of water is 1000 kg/m3 at __________________?
A. 0°C
B. 0°K
C. 4°C D. 20°C
E. all temperature
The property of fluid by virtue of which it offers resistance to shear is called____________________?
The property of fluid by virtue of which it offers resistance to shear is called____________________?
A. surface tension
B. adhesion
C. cohesion
D. viscosity
E. all of the above
Alcohol is used in manometer, because___________________?
Alcohol is used in manometer, because___________________?
Choose the wrong statement ?
A. its vapour pressure is low
B. it provides suitable meniscus for the inclined tube
C. its density is less
D. it provides longer length for a given pressure difference
E. it provides accurate readings.
For manometer, a better liquid combination is one having______________?
For manometer, a better liquid combination is one having______________?
A. higher surface tension
B. lower surface tension
C. surface tension is no criterion
D. high density and viscosity
E. low density and viscosity