A fluid in equilibrium can’t sustain____________________?
(A) tensile stress
(B) compressive stress
(C) shear stress
(D) bending stress
(D) all of the above
A perfect gas____________________?
(A) has constant viscosity
(B) has zero viscosity
(C) is in compressible
(D) is of theoretical interest
(D) none 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
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are________________?
(A) less
(B) more
(C) equal
(D) less at low temperature and more at high temperature
(D) there is no such criterion
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will_________________?
(A) increase
(B) decrease
(C) remain same
(D) increase/decrease depending on depth of immersion
(D) unpredictable
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
A pressure of 25 m of head of water is equal to_________________?
(A) 25 kN/m2
(B) 245 kN/m2
(C) 2500 kN/m2
(D) 2.5kN/m2
(D) 12.5 kN/m2
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
Kinematic viscosity is equal to_________________?
(A) dynamic viscosity/density
(B) dynamicviscosity x density
(C) density/dynamic viscosity
(D) 1/dynamicviscosity x density
(D) same as dynamic viscosity
The units of kinematic viscosity are____________________?
(A) metres2 per sec
(B) kg sec/metre
(C) newton-sec per metre
(D) newton-sec per metre
(D) none of the above