Select the correct statement?
(A) Local atmospheric pressure depends upon elevation of locality only
(B) Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
(C) Local atmospheric pressure is always below standard atmospheric pressure
(D) A barometer reads the difference be-tween local and standard atmospheric pressure
(D) Gauge piessure is equal to atmospheric pressure plus instrument reading
Fluid is a substance that___________________?
(A) cannot be subjected to shear forces
(B) always expands until it fills any container
(C) has the same shear stress.at a point regardless of its motion
(D) cannot remain at rest under action of any shear force
(D) flows
Practical fluids___________________?
(A) are viscous
(B) possess surface tension
(C) are compressible
(D) possess all the above properties
(D) possess none of the above properties
If no resistance is encountered by displacement, such a substance is known as ___________________?
(A) fluid
(B) water
(C) gas
(D) perfect solid
(D) ideal fluid
Property of a fluid by which its own molecules are attracted is called___________________?
(A) adhesion
(B) cohesion
(C) viscosity
(D) compressibility
(D) surface tension
The property of a fluid which enables it to resist tensile stress is known as___________________?
(A) compressibility
(B) surface tension
(C) cohesion
(D) adhesion
(D) viscosity
The specific weight of water is 1000 kg/m”_________________?
(A) at normal pressure of 760 mm
(B) at 4°C temperature
(C) at mean sea level
(D) all the above
(D) none of the above
When the flow parameters at any given instant remain same at every point, then flow is said to be___________________?
(A) quasi static
(B) steady state
(C) laminar
(D) uniform
(D) static
Heating of dry steam above saturation temperature is known as_____________________?
(A) enthalpy
(B) superheating
(C) supersaturation
(D) latent heat
(D) super tempering