The increase of temperature results in_________________?
(A) increase in viscosity of gas
(B) increase in viscosity of liquid
(C) decrease in viscosity of gas
(D) decrease in viscosity of liquid
A perfect gas_________________?
(A) has constant viscosity
(B) has zero viscosity
(C) is incompressible
(D) is of theoretical interest
(D) none of the above
In a static fluid__________________?
(A) resistance to shear stress is small
(B) fluid pressure is zero
(C) linear deformation is small
(D) only normal stresses can exist
(D) viscosity is nil
A balloon lifting in air follows the following principle_________________?
(A) law of gravitation
(B) Archimedes principle
(C) principle of buoyancy
(D) all of the above
(D) continuity equation
The bulk modulus of elasticity with increase in pressure___________________?
(A) increases
(B) decreases
(C) remains constant
(D) increases first upto certain limit and then decreases
(D) unpredictable
A fluid in equilibrium can’t sustain_________________?
(A) tensile stress
(B) compressive stress
(C) shear stress
(D) bending stress
(D) all of the above
The tendency of a liquid surface to contract is due to the following property_________________?
(A) cohesion
(B) adhesion
(C) viscosity
(D) surface tension
(D) elasticity
The pressure at a point in a fluid will not be same in all the directions when the fluid is________________?
(A) moving
(B) viscous
(C) viscous and static
(D) inviscous and moving
(D) viscous and moving
Which of the following is dimensionless ________________?
(A) specific weight
(B) specific volume
(C) specific speed
(D) specific gravity
(D) specific viscosity
A one dimensional flow is one which___________________?
(A) is uniform flow
(B) is steady uniform flow
(C) takes place in straight lines
(D) involves zero transverse component of flow
(D) takes place in one dimension