If no resistance is encountered by displacement, such a substance is known as ___________________?
A. fluid
B. water
C. gas
D. perfect solid
E. ideal fluid
Fluid Mechanics
Density of water is maximum at__________________?
Density of water is maximum at__________________?
A. 0°C
B. 0°K
C. 4°C
D. 100°C
E. 20°C.
Property of a fluid by which its own molecules are attracted is called___________________?
Property of a fluid by which its own molecules are attracted is called___________________?
A. adhesion
B. cohesion
C. viscosity
D. compressibility
E. surface tension
The property of a fluid which enables it to resist tensile stress is known as___________________?
The property of a fluid which enables it to resist tensile stress is known as___________________?
A. compressibility
B. surface tension
C. cohesion
D. adhesion
E. viscosity
The specific weight of water is 1000 kg/m”_________________?
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
E. none of the above
When the flow parameters at any given instant remain same at every point, then flow is said to be___________________?
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
E. static
The normal stress in a fluid will be constant in all directions at a point only if__________________________?
The normal stress in a fluid will be constant in all directions at a point only if__________________________?
A. it is incompressible
B. it has uniform viscosity
C. it has zero viscosity
D. it is frictionless
E. it is at rest
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is _________________?
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is _________________?
A. 10m/sec2
B. 9.81 m/sec2
C. 10.2/m sec
D. 9.75 m/sec2
E. 9 m/sec
For very great pressures, viscosity of moss gases and liquids__________________?
For very great pressures, viscosity of moss gases and liquids__________________?
A. remains same
B. increases
C. decreases
D. shows erratic behavior
E. none of the above
Viscosity of water in comparison to mercury is_________________?
Viscosity of water in comparison to mercury is_________________?
A. higher
B. lower
C. same
D. higher/lower depending on temperature
E. unpredictable