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
(D) is provides suitable meniscus
Which of the following is the unit of kinematic viscosity _________________?
(A) pascal
(B) poise
(C) stoke
(D) faraday
(D) none of the above
The ratio of absolute viscosity to mass density is known as____________________?
(A) specific viscosity
(B) viscosity index
(C) kinematic viscosity
(D) coefficient of viscosity
(D) coefficient of compressibility
The density of water is 1000 kg/m3 at __________________?
(A) 0°C
(B) 0°K
(C) 4°C
(D) 20°C
(D) all temperature
The property of fluid by virtue of which it offers resistance to shear is called____________________?
(A) surface tension
(B) adhesion
(C) cohesion
(D) viscosity
(D) all of the above
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
(D) low density and viscosity
Choose the correct relationship_________________?
(A) specific gravity = gravity x density
(B) dynamicviscosity = kinematicviscosity x density
(C) gravity = specific gravity x density
(D) kinematicviscosity = dynamicviscosity x density
(D) hydrostaticforce = surface tension x gravity.
Units of surface tension are_________________?
(A) energy/unit area
(B) distance
(C) both of the above
(D) it has no units
(D) none of the above
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is _________________?
(A) 400 kg/cm2
(B) 4000 kg/cm2
(C) 40 x 105 kg/cm2
(D) 40 x 106 kg/cm2
(D) none of the above
An ideal flow of any fluid must fulfill the following______________?
(A) Newton’s law of motion
(B) Newton’s law of viscosity
(C) Pascal’ law
(D) Continuity equation
(D) Boundary layer theory